Every formula, every jurisdiction

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: 1/3 L at a 12-ft lane (arizona.js TA33_GEOMETRY.tapers.shoulder_taper, SME example L 780 -> 260; TA30R_GEOMETRY.tapers.shoulder_taper, ADOT TTCDG SA-15 'SHOULDER TAPER 1/3 L MIN'). Only where a shoulder is taken.
• buffer: 0 ft both ends: arizona.js BUFFER_POLICY (Jeremy Anderson 2026-08-10); SME_RULINGS AZ-9/4-NO-BUFFER (Matthew Grotts 2026-09-04)
• sign_spacing: Table 6B-1 values (via AZ-i); row picked by speed per Keryk assignment, not the MUTCD's (arizona.js WORK_ZONE_SIGN_SPACING); row 'rural'
• taper_spacing: ADOT 40/80 shall, yields to MUTCD below 40 mph (arizona.js CHANNELIZING_DEVICE_SPACING, DEVICE_SPACING). Departure 20 ft = MUTCD 6B.08 downstream-taper Guidance (~20 ft), within the ADOT 40 ft taper cap (DEVICE_SPACING.taperMaxFt).
• tangent_spacing: ADOT 40/80 shall, yields to MUTCD below 40 mph (arizona.js CHANNELIZING_DEVICE_SPACING, DEVICE_SPACING). Departure 20 ft = MUTCD 6B.08 downstream-taper Guidance (~20 ft), within the ADOT 40 ft taper cap (DEVICE_SPACING.taperMaxFt).
• departure_spacing: ADOT 40/80 shall, yields to MUTCD below 40 mph (arizona.js CHANNELIZING_DEVICE_SPACING, DEVICE_SPACING). Departure 20 ft = MUTCD 6B.08 downstream-taper Guidance (~20 ft), within the ADOT 40 ft taper cap (DEVICE_SPACING.taperMaxFt).
• buffer_tangent_spacing: ADOT 40/80 shall, yields to MUTCD below 40 mph (arizona.js CHANNELIZING_DEVICE_SPACING, DEVICE_SPACING). Departure 20 ft = MUTCD 6B.08 downstream-taper Guidance (~20 ft), within the ADOT 40 ft taper cap (DEVICE_SPACING.taperMaxFt).

ta-10, ta-30, ta-30r, ta-33

• TA-10 / TA-30 / TA-30R: ADOT publishes no sheet for these; the Arizona reference governs them by the federal figure via Supplement preamble AZ-i (arizona.js TA10/TA30/TA30R_GEOMETRY, inheritedFrom federal). The federal figure is the ruled component list, amended by the Arizona overrides.
• Urban-freeway buffer exception: upstream Table 6B-2 on an urban freeway lane closure only (arizona.js BUFFER_POLICY.freewayException). Not SME-confirmed; 0 ft priced on TA-33. Pass --buffer-ft for that case.
• TA-10 R4-7 KEEP RIGHT on both approaches (SME 2026-08-13, arizona.js TA10_GEOMETRY): required, but no catalogue asset; the reference does not emit it either.
• Statutory, not priced (the reference emits none of these either): SA-12 R2-101 / R2-103 on every Arizona pattern with workers present (ADOT TTCDG Intro p.1; arizona.js STATEWIDE_MANDATORY_SIGNING); R4-103 MOVE OVER on every work zone with 2+ lanes, i.e. TA-30 / 30R / 33 (no asset); TA-10 step-down…
• Sign size 48x48 on W-series rows (arizona.js SIGN_SIZE_POLICY, MOAS pending): not carried; the BOM counts panels, not sizes.

• L: MCDOT TC-012 (maricopa-county.js TC012_MERGING_TAPER_BY_WIDTH) (printed cell governs)
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: TC-012 prints 1/3 L at a 12-ft lane, not at the shoulder width. No Maricopa TA prices a shoulder taper: shoulder closures are out of scope (maricopa-county.js TAPER_TYPES).
• buffer: maricopa-county.js BUFFER_POLICY; PRECEDENCE.practiceOverrides MC-OVR-1 (Matthew Grotts 2026-09-04, ruled 2026-09-14); SME_RULINGS MC-9/4-NO-BUFFER
• sign_spacing: MCDOT TCM TC-012 Table 6H-3, A = B = C (maricopa-county.js ADVANCE_WARNING_SIGN_SPACING) row 'rural 55 mph, 500 ft'
• taper_spacing: SME ruling: flat ADOT 40 ft along tapers / 80 ft along tangents at every speed, 'EMITTED VALUES FOLLOW THIS RULING' (maricopa-county.js CHANNELIZING_DEVICE_SPACING.stateLayerConflict.smeRuling, Jeremy Anderson email 2026-08-20; ADOT TTCDG SA-5L Note 6, 'SPACING OF CHANNELIZING DEVICES SHALL BE 40' ALONG TAPERS AND 80' ALONG TANGENTS').
• tangent_spacing: SME ruling: flat ADOT 40 ft along tapers / 80 ft along tangents at every speed, 'EMITTED VALUES FOLLOW THIS RULING' (maricopa-county.js CHANNELIZING_DEVICE_SPACING.stateLayerConflict.smeRuling, Jeremy Anderson email 2026-08-20; ADOT TTCDG SA-5L Note 6, 'SPACING OF CHANNELIZING DEVICES SHALL BE 40' ALONG TAPERS AND 80' ALONG TANGENTS').
• departure_spacing: SME ruling: flat ADOT 40 ft along tapers / 80 ft along tangents at every speed, 'EMITTED VALUES FOLLOW THIS RULING' (maricopa-county.js CHANNELIZING_DEVICE_SPACING.stateLayerConflict.smeRuling, Jeremy Anderson email 2026-08-20; ADOT TTCDG SA-5L Note 6, 'SPACING OF CHANNELIZING DEVICES SHALL BE 40' ALONG TAPERS AND 80' ALONG TANGENTS'). (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: SME ruling: flat ADOT 40 ft along tapers / 80 ft along tangents at every speed, 'EMITTED VALUES FOLLOW THIS RULING' (maricopa-county.js CHANNELIZING_DEVICE_SPACING.stateLayerConflict.smeRuling, Jeremy Anderson email 2026-08-20; ADOT TTCDG SA-5L Note 6, 'SPACING OF CHANNELIZING DEVICES SHALL BE 40' ALONG TAPERS AND 80' ALONG TANGENTS').

ta-10, ta-30, ta-30r, ta-33

• TCM §6.3.4 gates cones by WORK TYPE as well as by time of day — permitted in daylight for pilot car / flagger operations and pavement surface treatments, prohibited on lane merges or diversions. The estimator has no work-type input, so it prices the vertical panel throughout rather than switching…
• Speed reduction TC-013: conditional overlay (maricopa-county.js SPEED_REDUCTION :2209-2233). Not an estimator input.
• KEEP RIGHT / KEEP LEFT reminders (R4-7 / R4-8): priced at the drawn count (TA-10 2, TA-30 4, TA-30R 2; TA-33 2 per direction deployed — TC-404 draws 4 across both directions). The standing rule places them at every intersecting road; the 700-ft interval is contradictory in the TCM, so extra…
• Freeway: MCDOT publishes no freeway tier; a freeway is ADOT right-of-way (run --jurisdiction arizona). --road-type freeway switches sign spacing only; up to 55 mph device spacing and signs stay county, above 55 mph Arizona drivers apply.

• L: TBM Table 2 (phoenix.js TABLE2_MERGING_TAPER_BY_WIDTH) (printed cell governs)
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: TBM prints 1/3 L at a 12-ft lane, not at the shoulder width
• buffer: 0 ft both ends, TBM publishes no buffer table (phoenix.js BUFFER_POLICY; LOOKUP.bufferSpace)
• sign_spacing: sign gap = L (TBM Note 2 / Ch.6 p.52: Distance = L (phoenix.js ADVANCE_SIGN_SPACING). Above 55 mph arizona applies (falls_back_to).)
• taper_spacing: TBM Table 2: taper spacing = 1 x S. Cones only are capped at 25 ft (footnote *). No tangent column - federal 2xS (phoenix.js DEVICE_SPACING)
• tangent_spacing: TBM Table 2: taper spacing = 1 x S. Cones only are capped at 25 ft (footnote *). No tangent column - federal 2xS (phoenix.js DEVICE_SPACING)
• departure_spacing: TBM Table 2: taper spacing = 1 x S. Cones only are capped at 25 ft (footnote *). No tangent column - federal 2xS (phoenix.js DEVICE_SPACING) (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: TBM Table 2: taper spacing = 1 x S. Cones only are capped at 25 ft (footnote *). No tangent column - federal 2xS (phoenix.js DEVICE_SPACING)

_source, ta-10, ta-11, ta-15, ta-18, ta-22, ta-23, ta-24, ta-25, ta-26, ta-3, ta-30, ta-30r, ta-33, ta-6

• Above 55 mph every numeric driver comes from arizona.json (falls_back_to): taper, sign spacing (abc, 60-65 frozen), 40/80 device spacing, no min-device floor. The TBM cone cap (25 ft at any speed) is not carried above 55 because arizona has none; it bites only with --device-class cone.
• Sign spacing 'L' still applies at every lane width at or below 55 mph. phoenix.js refuses off Table 2's 10/11/12-ft grid and hands off to the state layer; the engine's falls_back_to keys on speed only.
• Sign size 36x36 inside the metro (phoenix.js SIGN_SIZE :557-586): not carried; the BOM counts panels, not sizes.
• TA-10 KEEP RIGHT trap (R4-7a x3 + R4-8a x1), centreline panel run and flag trees x2 (phoenix.js KEEP_RIGHT_TRAP; ELEMENT_MANIFESTS ta-10): no device type or asset; the reference does not emit them either.
• Below 25 mph phoenix.js refuses sign spacing and device spacing and hands both to the state layer (arizona, federal Table 6B-1 urban-low: 100 ft). The estimator keeps Phoenix Distance = L there (80 ft at 20 mph); its falls_back_to hands off above a speed only.

• L: MUTCD Table 6B-4
• L_half: Pub 213 p.37 master chart, shifting taper printed at a 12-ft offset: 65 / 90 / 125 / 160 / 270 / 300 / 330 / 360 / 390 / 420 ft at 25-70 mph (pa.js SHIFTING_TAPER_TABLE :278-290). Above 70 mph the 70 row applies (nearestSpeed clamp, pa.js:1911-1912).
• L_shoulder: Pub 213 p.37 shoulder-taper column, 55 mph row: 220 ft (pa.js SHOULDER_TAPER_TABLE :293-304)
• buffer: MUTCD Table 6B-2 (REQUIRED upstream only, Distance E (pa.js:229-258, 1775-1804); downstream buffer 0 (pa.js:1806-1809))
• sign_spacing: Pub 213 p.37 master chart (ranges 100-200 urban 25-35 / 350-500 urban 40-55 / 500-800 rural; minimum priced, SME-OPEN OQ-2) row 'urban-high'
• taper_spacing: Pub 213: 1xS taper / 2xS tangent (pa.js:370-395, 1964-1972)
• tangent_spacing: Pub 213: 1xS taper / 2xS tangent (pa.js:370-395, 1964-1972)
• departure_spacing: Pub 213: 1xS taper / 2xS tangent (pa.js:370-395, 1964-1972) (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: Pub 213: 1xS taper / 2xS tangent (pa.js:370-395, 1964-1972)

• drum when {"gt_hours": 72}

ta-10, ta-11, ta-18, ta-21, ta-22, ta-23, ta-24, ta-3, ta-30, ta-30r, ta-33, ta-4, ta-5, ta-6

• ta-11: PATA 111/205 cap the activity area at 250 ft [PATA 111 note 3 p.194] - a validator, not priced. The fixed 50-ft buffer IS priced (ta_overrides.ta-11.buffer).
• Freeway right-side-only alternative (right side + 2 PCMS at 1/2 C and 1/2 D, GN D-12) is not priced; the dual-side option is (pa.js:1647-1648, 2587). SME-OPEN: whether the single-side alternative (signs on the right plus 2 mandatory message boards) is the default.

• L: MUTCD Table 6B-4
• L_half: VWAPM v11.0 Table 6P-V7 p.148 (= 6B-V5). 0.75*W*S^2/60 below 45 mph; W*S from 45, 200-ft floor (Note 5); 750 ft at 60 and 1000 ft at 65-70 for W >= 10 (Notes 2-3). S = existing limit (Note 6). Column keyed to lane width; the 11-ft column is the Note 1 formula for an in-between width, rounded up to 10 ft (virginia.js:529-550 SHIFTING_TAPER_TABLE, 749-788 TABLE_6P_V7). Lane shifts out of VA scope…
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: VWAPM Table 6P-V4 (MANDATORY (VWAPM 6B.06 para 09; TTC-16.0 note 8 / TTC-42.0 note 1f))
• sign_spacing: VWAPM Table 6P-V3, min of range (virginia.js:280-316 ADVANCE_WARNING_SIGN_SPACING, LOOKUP.signSpacing 3822-3955) row 'divided non-limited >=50, no upper bound (Table 6P-V3 minimum; 46-49 rounds up to this row)'
• taper_spacing: VWAPM Table 6P-V8 (virginia.js:596-617 DEVICE_SPACING_TABLE, 1014-1033 TABLE_6P_V8)
• tangent_spacing: VWAPM Table 6P-V8 (virginia.js:596-617 DEVICE_SPACING_TABLE, 1014-1033 TABLE_6P_V8)
• departure_spacing: VWAPM Table 6P-V8 (virginia.js:596-617 DEVICE_SPACING_TABLE, 1014-1033 TABLE_6P_V8) (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: VWAPM Table 6P-V8 (virginia.js:596-617 DEVICE_SPACING_TABLE, 1014-1033 TABLE_6P_V8)

ta-10, ta-26, ta-30, ta-30r, ta-33

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MdMUTCD Table 6C-3, 'Shoulder Taper - at least 0.33 L', taken as one third of the merging L at 12 ft: 333 ft at the 1,000-ft freeway floor (TCP-Rules origin/main src/data/reference/maryland.js:1309-1336, 2916-2922). Drawn only where the closed lane is against a shoulder: ta-33 both families, both sides; ta-30r right-lane sheets; NOT the undivided left-lane sheets (ta-30). At 40 mph and below the…
• buffer: MdMUTCD Table 6C-2 (STANDARD ('shall') on State roads, MdMUTCD 6C.06 para 11a)
• sign_spacing: MdMUTCD Table 6C-1 row 'rural'; maryland override (A 500->800, B 500->700, C 500->1100) per MD 104.01-02 41-65 mph row; dimension run 800'/700'/1100' read on MD 104.04-03 and MD 104.03-03
• taper_spacing: MD 104.05 freeway: taper 40 ft, tangent 80 ft in the buffer and 40 ft next to the work, at any speed (TCP-Rules origin/main src/data/reference/maryland.js TA33_FREEWAY_GEOMETRY.deviceSpacing, MD 104.00-09 para 7.2). A TA-33 drum job at 40 mph posted or below is a freeway or a prevailing speed above 40, so the >40 column applies. Drums: MD 104.00-10 para 7.8 allows open-tangent drums up to 500 ft…
• tangent_spacing: MD 104.05 freeway: taper 40 ft, tangent 80 ft in the buffer and 40 ft next to the work, at any speed (TCP-Rules origin/main src/data/reference/maryland.js TA33_FREEWAY_GEOMETRY.deviceSpacing, MD 104.00-09 para 7.2). A TA-33 drum job at 40 mph posted or below is a freeway or a prevailing speed above 40, so the >40 column applies. Drums: MD 104.00-10 para 7.8 allows open-tangent drums up to 500 ft…
• departure_spacing: MD 104.05 freeway: taper 40 ft, tangent 80 ft in the buffer and 40 ft next to the work, at any speed (TCP-Rules origin/main src/data/reference/maryland.js TA33_FREEWAY_GEOMETRY.deviceSpacing, MD 104.00-09 para 7.2). A TA-33 drum job at 40 mph posted or below is a freeway or a prevailing speed above 40, so the >40 column applies. Drums: MD 104.00-10 para 7.8 allows open-tangent drums up to 500 ft…
• buffer_tangent_spacing: MD 104.05 freeway: taper 40 ft, tangent 80 ft in the buffer and 40 ft next to the work, at any speed (TCP-Rules origin/main src/data/reference/maryland.js TA33_FREEWAY_GEOMETRY.deviceSpacing, MD 104.00-09 para 7.2). A TA-33 drum job at 40 mph posted or below is a freeway or a prevailing speed above 40, so the >40 column applies. Drums: MD 104.00-10 para 7.8 allows open-tangent drums up to 500 ft…

• drum when {"road_types": ["freeway"]}
• drum when {"min_speed": 41}

ta-10, ta-30, ta-30r, ta-33

• D position. D = 2,600 ft on the 41-65 and Expressway/Freeway rows, settled at 450 dpi 2026-09-14; the 2,400 ft reading is retracted (TCP-Rules origin/main src/data/reference/maryland.js:527). The engine carries A/B/C only, so the fourth panel is counted but has no position.
• TA-33 family is picked by road type. MD 104.04 (divided, uncontrolled): 41-65 row, no taper floor, PV at >=55 mph. MD 104.05 (expressway/freeway): 1000/500/1100 row, 1,000-ft floor, PV at any speed. Pass --road-type freeway for a freeway at 65 mph or below; above 65 only the freeway row exists,…
• Freeway taper floor is a max(), the engine's flat rule is a set. max(W*S, 1000) (TCP-Rules origin/main src/data/reference/maryland.js:886-896). Harmless at W = 12, where W*S passes 1,000 ft only above 83 mph; wrong for a wider offset.
• Open-tangent drums (MD 104.00-10 para 7.8, up to 500 ft apart) are not modelled; para 7.2 is used. Precedence is SME-open (GAP-MD-DRUM-500, TCP-Rules origin/main src/data/reference/maryland.js:936-973).
• Divided-highway sign duplication is TRUE (median + outside shoulder) on MD 104.04 and MD 104.05: every advance sign and the G20-2; the arrow board is not duplicated. Settled TRUE 2026-09-14 (MD 104.04-03 at 600 dpi, MD 104.05-07/-08 at 400 dpi), corroborated by OOTS 6-F10 note 2; supersedes the…
• Protection vehicle: work location (on-road vs adjacent) and the MD 104.01-11A duration bands are not modelled, and Maryland publishes no PV position or roll-ahead distance (GAP-MD-PV-POSITION / GAP-MD-RAD). The PV is priced on-road: >=55 mph on every TA, any speed on a freeway (MD 104.01-11A,…
• TPRS. MD 104.00-18 para 19.2 makes temporary portable rumble strips mandatory when all of daytime flagging by a certified flagger with a STOP/SLOW paddle, a two-lane roadway, duration over 3 hours and a posted limit of 40 mph or more are true, negated when an AFAD is used. This is a real TA-10…
• Fourth advance sign axis. Emitted at >=41 mph (and on the freeway row) per the MD 104.01-02 chart. Every MD 104.02/.03/.04/.05 sheet instead columns it by duration (night / >12 hr). A short-term daytime plan drawn to the sheet shows one fewer panel per side, and on a freeway the short column drops…
• Maryland draws no departure taper on TA-30, TA-30R or TA-33 (a real zero; TCP-Rules origin/main src/data/reference/maryland.js:2245-2250, 2476-2480, 2743-2747, 2910-2914). Table 6C-3's 50-100 ft per lane opened applies only where one is drawn.
• No Maryland governing sheet is registered, deliberately. governing_sheets is left unset so the result reports 'declared fallback' rather than claiming a Maryland sheet was extracted. Maryland's own sheets (MD 104.04-03, MD 104.05-07, MD 104.02-09/-10) print word-message panels carrying distance…
• Validators, not BOM quantities: work-zone speed reduction capped at 10 mph at <=65 mph and 15 mph at 70 mph (6C.01 para 15a; always the text, the old 'flat 10 mph' was a transcription error, TCP-Rules origin/main src/data/reference/maryland.js:172-185); conflicting closures no closer than 1.5…

• L: NJDOT TCD-2 (PDF p.104), 'MINIMUM TAPER LENGTH L - FOR LANE WIDTHS', 10/11/12-ft columns (new-jersey.js DETAILS_TAPER_BY_WIDTH :824-834) (printed cell governs)
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: L/3 of the 12-ft merging L (WZSSG p.XI/XII; TCD-8 / TCD-14 dimension L/3). Right-lane-AND-shoulder sheets only (TCD-8 top, TCD-14 top); the left-lane sheets TCD-9 / TCD-15 have none. new-jersey.js :560-563, :587-646. Priced on right-side TA-30R and TA-33.
• buffer: NJDOT TCD-4/8/9/14/15 dimension "100' MIN." BUFFER at every speed. new-jersey.js :887-935, :2788-2799.
• sign_spacing: NJ sign spacing (45+ mph: TCD sheet ladder, fixed positions 500/1,000/1,500/2,640 ft, new-jersey.js :1023-1127; below 45 mph: MUTCD-style road-type buckets, WZSSG p.5 note 6) row 'rural'
• taper_spacing: TCD-2 columns B (taper) = 1.0 x S and D (tangent) = 2.0 x S, tabulated 25-65 mph (new-jersey.js :940-977). Departure taper: B = 1.0 x S along a taper (TCD-2 col B; new-jersey.js :3124, :3159).
• tangent_spacing: TCD-2 columns B (taper) = 1.0 x S and D (tangent) = 2.0 x S, tabulated 25-65 mph (new-jersey.js :940-977). Departure taper: B = 1.0 x S along a taper (TCD-2 col B; new-jersey.js :3124, :3159).
• departure_spacing: TCD-2 columns B (taper) = 1.0 x S and D (tangent) = 2.0 x S, tabulated 25-65 mph (new-jersey.js :940-977). Departure taper: B = 1.0 x S along a taper (TCD-2 col B; new-jersey.js :3124, :3159).
• buffer_tangent_spacing: TCD-2 columns B (taper) = 1.0 x S and D (tangent) = 2.0 x S, tabulated 25-65 mph (new-jersey.js :940-977). Departure taper: B = 1.0 x S along a taper (TCD-2 col B; new-jersey.js :3124, :3159).

• drum when {"min_hours": 48, "min_speed": 45}

ta-10, ta-30, ta-30r, ta-33

• Moving/mobile-op buffer, 70 ft min / 150 ft max ahead of each moving work area (TCD-1 sht 103 GN-12). Stationary operations only here, so it never applies; BDC25T-01 revises the floor to 60 ft and is flagged needs-SME.
• Departure taper is 100 ft PER LANE in NJ, so a 2-lane closure runs 200 ft. The engine carries a single downstream_taper_ft and will under-count a multi-lane departure.
• ROAD WORK 2 MILES not priced at 60 mph (NJ-15 open); the 2 MILES clause is absent from TCD-4/8/9 (new-jersey.js :1121-1123).
• TA-LS lane-shift squeeze, an NJ figure with no federal analog.
• NJTA (NJ Turnpike / Garden State Parkway) and PANYNJ are standalone authorities; this file does not apply there (new-jersey.js :104-107, :157-161).
• NJ-14: TCD sheets draw breakaway barricades in the merging taper and drums elsewhere, with no duration gate; unreconciled with the WZSSG 48 h / 45 mph drum gate this BOM applies (new-jersey.js :1005-1013).

• L: NYSDOT 619-011 Table 011-02 (Taper Lengths & Number of Cones), 10/11/12-ft columns; same cells in Tables 302-02, 402-03 and 504-02 (printed cell governs)
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: 619-011 Table 011-02 shoulder group, 50/55/60 mph rows, '8 FT.' column: 160/4/5
• buffer: NYSDOT 619-011 Table 011-03 (shall on the standard sheets; the underlying MUTCD values are Option (may be used))
• sign_spacing: MUTCD Table 6B-1 row 'rural'
• taper_spacing: Taper and tangent: 40 ft maximum (619-302 callout 'CONE SPACING NOT TO EXCEED 40 FT. (1 SKIP LINE)'; 619-302 Note 7, short-term active work space; 619-011 Table 011-02 footnote **). Departure: federal ~20 ft (MUTCD 6B.08 para 12); New York publishes none.
• tangent_spacing: Taper and tangent: 40 ft maximum (619-302 callout 'CONE SPACING NOT TO EXCEED 40 FT. (1 SKIP LINE)'; 619-302 Note 7, short-term active work space; 619-011 Table 011-02 footnote **). Departure: federal ~20 ft (MUTCD 6B.08 para 12); New York publishes none.
• departure_spacing: Taper and tangent: 40 ft maximum (619-302 callout 'CONE SPACING NOT TO EXCEED 40 FT. (1 SKIP LINE)'; 619-302 Note 7, short-term active work space; 619-011 Table 011-02 footnote **). Departure: federal ~20 ft (MUTCD 6B.08 para 12); New York publishes none.
• buffer_tangent_spacing: Taper and tangent: 40 ft maximum (619-302 callout 'CONE SPACING NOT TO EXCEED 40 FT. (1 SKIP LINE)'; 619-302 Note 7, short-term active work space; 619-011 Table 011-02 footnote **). Departure: federal ~20 ft (MUTCD 6B.08 para 12); New York publishes none.

ta-10, ta-30, ta-30r, ta-33

• NEW YORK CITY IS OUT OF SCOPE AND IS NOT THIS FILE. NYC DOT operates under its own street-work rules and the NYC Standard Highway Specifications, and NYSDOT's 619 standard sheets do not govern city streets. Running a NYC job against this overlay would apply NYSDOT taper, spacing and signing values…
• THE NEW YORK STATE THRUWAY AUTHORITY IS A THIRD REGIME AND IS NOT MODELLED. It publishes its own standard sheets on its own revision cycle (thruway.ny.gov/business/contractors/standard-sheets/); a Thruway job priced against this file would carry NYSDOT numbers that the Thruway may not use, and no…
• New York's merging-taper table is two-dimensional — posted speed x LATERAL SHIFT OF TRAFFIC FLOW PATH, 4 through 12 ft. merging_taper.table_by_width carries the 10/11/12-ft columns (the lane-closure sheets' lane-width index). The 4-9 ft shift columns are not encoded: at those offsets this job…
• The lane-closure sheets (619-302 / 619-402 / 619-504) index the same taper table by LANE WIDTH 10/11/12 ft while 619-011 indexes it by LATERAL SHIFT 4-12 ft. The numbers are identical, only the column label differs. This file treats the column key as offset width; a reviewer reading a lane-closure…
• New York halves the active-work-space device spacing to 20 ft center-to-center for INTERMEDIATE-TERM stationary work (619-402 sheet 1 Note 4) and to 20 ft for long-term, against 40 ft for SHORT-TERM (619-302 sheet 1 Note 7). The engine carries one tangent spacing per job and this file encodes the…
• New York requires transverse channelizing devices inside a long closed shoulder: "6. CHANNELIZING DEVICES SHALL BE PLACED TRANSVERSELY A MINIMUM OF EVERY 800' AS SHOWN WHEN A PAVED SHOULDER HAVING A WIDTH OF 8' OR GREATER IS CLOSED FOR A DISTANCE GREATER THAN 800'." (619-302 Note 6; 619-402 sheet…
• device_spacing_departure returned NOT FOUND. 619-010, 619-011, 619-302, 619-307, 619-402, 619-504 and the NYS Supplement Part 6 were searched and New York publishes no statement specific to device spacing within the downstream/departure taper. New York dimensions that taper at 50-100 ft and draws…
• Conflict inside New York's current sheets at 65 mph / 12-ft shift: 619-011 Table 011-02 and 619-302 Table 302-02 print 800/19/20, while 619-402 Table 402-03 and 619-504 Table 504-02 print 800/20/21. 800 ft / 40 ft = 20 skip lines and every other cell is (length/40)+1 devices, so the engine's 40-ft…
• New York's Table 011-03 buffer column has no 60 mph row and Table 011-02's taper grid does on 619-011 but not on 302/402/504. A 60 mph New York job therefore takes a FEDERAL buffer (570 ft) that New York has not printed, and a 720-ft taper that only one of the four sheets carries.
• New York's tables stop at 65 mph. Nothing above 65 is New York-specific — taper, shoulder taper and device floor all leave the published grid — although 65 is also the maximum posted speed on the New York State highway system, so the gap is largely theoretical. The superseded 2008 sheet 619-11…
• New York restricts intermediate-term and long-term taper devices to DRUMS or OVERSIZED VERTICAL PANELS (619-402 Table 402-05, 619-504 Table 504-04). The engine has no oversized-vertical-panel class, so those tapers are priced as drums; the two are equal alternates in New York and the unit cost…
• DEVICE SPACING AMBIGUITY inside New York's own device-application tables. Tables 402-05 and 504-04 give BOTH a 20 FT. and a 40 FT. maximum device-spacing row for 'SHOULDER/MERGING/SHIFTING TAPERS' with identical allowed-device marks, and on 619-402 the 20 FT. cell carries an asterisk pointing to…
• New York prescribes the advance-warning SIGN LEGEND distances alongside the spacings (Table 011-06 columns XX / YY): AHEAD/AHEAD for both lower urban bands, 1000 FT./AHEAD for urban 45 or more, 1500 FT./1000 FT. for rural, 1 MILE / 1/2 MILE for freeway. The engine emits sign codes and quantities…
• New York fixes work-zone lane widths — "1. UNLESS AUTHORIZED BY THE ENGINEER, THE MINIMUM LANE WIDTHS FOR WORK ZONE TRAVEL LANES SHALL BE AS FOLLOWS: FREEWAYS AND/OR EXPRESSWAYS IS 11'. THE MINIMUM LANE WIDTH FOR ALL OTHER TYPES OF ROADWAYS IS 10'." (619-010). The engine takes lane width as a…
• NY-specific BOM lines that are NOT emitted and materially change cost: roll-ahead distances (Table 011-04), positive barrier flare rates (Table 011-05), sign sizes (Tables 402-06 / 504-05), the second protective vehicle (VEH #2, 619-302 note 8, shoulder >= 8 ft) and the New York signs NYR9-11 and…
• LEGAL FORCE CAVEAT, not an engine gap. Every New York value in this file comes from the 619 Standard Sheets, which are a construction/design standard incorporated into NYSDOT contracts, NOT from the adopted MUTCD supplement — the 2010 NYS Supplement's Part 6 amends only 6F, 6H and 6I and the draft…
• EDITION WATCH. Book 3 (2026-01-01) is cited. The standard-sheet index also lists 619-010_E3, 619-402_E3 and 619-504_E3 rows dated April-May 2026 and _250501 files effective 05/01/2025; re-check those against the values here. Every numeric driver matches the current printings except the 9-12 ft…
• SHOULDER TAPER ABOVE AN 8-FT SHOULDER IS UNDER-READ. The current 619-011 Table 011-02 and 619-302 Table 302-02 print seven shoulder-width columns (<=4, 5-7, 8, 9, 10, 11, 12 FT.) where the superseded 2021 printing had three. This file encodes the <=4 / 5-7 / 8 FT. columns and returns the 8-FT.…
• 619-302 note 9 speed-limit sign is now emitted as one R2-1 on ta-33 (ta_overrides). It covers NYR2-2..NYR2-6 as appropriate; whether the NYR2 family survives TSMI 24-01 is open (new-york.js :2237-2243). The same note is 619-402_E3 Note 8 (intermediate-term, out of scope); it is not on 619-504_E3…
• THE DRUM GATE'S TRIGGER IS A PROXY, NOT NEW YORK'S TRIGGER. The restriction itself is verified — current Tables 402-05 and 504-04 mark only DRUMS and OVERSIZED VERTICAL PANELS as ALLOWED on shoulder/merging/shifting tapers, every cone column blank — but New York keys it to its own duration words,…
• THE 45-55 MPH BAND DEFAULTS TO RURAL BY KERYK MAPPING, NOT BY NEW YORK. New York classifies urban vs rural by the 619-010 land-use test, never by speed, so the boundary had to be chosen. Federal.json sends 45 mph to urban-high (350/350/350); this file sends it to rural (500/500/500). No BOM line…
• TA-33 MEDIAN DUPLICATION IS UNSWEPT. Onboarding records 'no median duplication' as untested, not confirmed (new-york.js :2051, :2383). The BOM keeps the federal right + median qty 2 on W20-1, W20-5{s}, W4-2{s} and G20-2; R2-1 and NYW8-33 are priced once. If 619-302 signs one side only, set…
• TA-30 / TA-30R are NOT COVERED by onboarding (619-311 / 619-317 held, new-york.js :2195, :2410). This file prices them from the federal figure with NY drivers; nothing NY-specific is asserted for their sign sets.
• New York prints a device count in every taper cell of Table 011-02, equal to (taper length / 40) + 1, and notes it 'CAN BE ADJUSTED AS NECESSARY'. The 40-ft device spacing reproduces every printed count, so no separate minimum is applied.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: 1/4 L per the NC reference (nc.js:168, 324). SME-OPEN: RSD 1101.11 Sheet 1 ('SHOULDER TAPER ... 1/3 L MINIMUM') and RSD 1101.04 Sheet 1 print 1/3 L.
• buffer: RSD 1101.11 Sheet 2 of 4, 'Minimum Longitudinal Buffer Space (Feet)' (minimum - the table is titled 'MINIMUM LONGITUDINAL BUFFER SPACE (FEET)' and RSD 1101.11 Sheet 2 prints no 'shall' or 'should' of its own; its mandatory force comes from 2024 Std. Spec. Art. 1101-1 verbatim, 'Maintain traffic through work zones in accordance with these Specifications, the MUTCD, Roadway Standard Drawings, 23…
• sign_spacing: RSD 1101.11 Sheet 4 Advance Warning Sign Spacing Chart row 'rural'
• taper_spacing: RSD 1101.02 Sheet 3 (<60 mph) / Sheet 4 (>=60 mph) of 19 (divided multi-lane, 1 lane closed) General Note 3: 'PLACE DRUMS IN TAPERS AT THE MAXIMUM SPACING EQUAL IN FEET TO THE POSTED SPEED LIMIT. PLACE DRUMS ALONG THE WORK AREA AT THE MAXIMUM SPACING EQUAL IN FEET TO 2 TIMES THE POSTED SPEED LIMIT.' No low-speed carve-out. 2024 Std. Spec. Art. 1135-3: 'Do not use cones in the upstream taper of…
• tangent_spacing: RSD 1101.02 Sheet 3 (<60 mph) / Sheet 4 (>=60 mph) of 19 (divided multi-lane, 1 lane closed) General Note 3: 'PLACE DRUMS IN TAPERS AT THE MAXIMUM SPACING EQUAL IN FEET TO THE POSTED SPEED LIMIT. PLACE DRUMS ALONG THE WORK AREA AT THE MAXIMUM SPACING EQUAL IN FEET TO 2 TIMES THE POSTED SPEED LIMIT.' No low-speed carve-out. 2024 Std. Spec. Art. 1135-3: 'Do not use cones in the upstream taper of…
• departure_spacing: RSD 1101.02 Sheet 3 (<60 mph) / Sheet 4 (>=60 mph) of 19 (divided multi-lane, 1 lane closed) General Note 3: 'PLACE DRUMS IN TAPERS AT THE MAXIMUM SPACING EQUAL IN FEET TO THE POSTED SPEED LIMIT. PLACE DRUMS ALONG THE WORK AREA AT THE MAXIMUM SPACING EQUAL IN FEET TO 2 TIMES THE POSTED SPEED LIMIT.' No low-speed carve-out. 2024 Std. Spec. Art. 1135-3: 'Do not use cones in the upstream taper of…
• buffer_tangent_spacing: RSD 1101.02 Sheet 3 (<60 mph) / Sheet 4 (>=60 mph) of 19 (divided multi-lane, 1 lane closed) General Note 3: 'PLACE DRUMS IN TAPERS AT THE MAXIMUM SPACING EQUAL IN FEET TO THE POSTED SPEED LIMIT. PLACE DRUMS ALONG THE WORK AREA AT THE MAXIMUM SPACING EQUAL IN FEET TO 2 TIMES THE POSTED SPEED LIMIT.' No low-speed carve-out. 2024 Std. Spec. Art. 1135-3: 'Do not use cones in the upstream taper of…

• drum when {"min_speed": 45}
• drum when {"min_hours": 72}

ta-10, ta-30, ta-30r, ta-33

• NC defines the taper speed input as 'S = EXISTING POSTED SPEED LIMIT PRIOR TO THE IMPLEMENTATION OF A WORK ZONE SPEED LIMIT REDUCTION' (RSD 1101.11 Sheet 1, Note 1). The estimator takes one speed and cannot tell a pre-reduction posted limit from a reduced work-zone limit, so a job entered at the…
• RSD 1101.11 Sheet 1 verbatim: 'DO NOT INTRODUCE A MERGING OR SHIFTING TAPER WITHIN A CURVE OF THE ROADWAY.' The estimator has no horizontal-curve geometry, so it cannot detect the violation; in the field this forces the taper to be relocated and usually lengthens the upstream run, adding devices…
• NC's full-L shifting taper on controlled-access facilities fires only when road_type resolves to 'freeway'. A 55-80 mph controlled-access job resolves to 'rural' from the speed band and is sized at 1/2 L, roughly half the devices NC wants in the shift. The overlay warns on every 55-80 mph rural…
• NC's longitudinal buffer is a floor, not always the built length: RSD 1101.11 Sheet 2 Note 3 requires stopping sight distance to the merge taper, flagger or flashing arrow board and requires the closure to be EXTENDED at the buffer where that sight distance is not achieved. A BOM run at the flat…
• The below-45 mph device spacing (20 ft taper / 40 ft tangent) is NC's cone cadence (Art. 1135-3(A)) and the RSD 1101.02 Sheet 1 GN4 two-lane spacing. A below-45 TA-10 job longer than 3 consecutive days trips the Art. 1135-3 cone ban and is priced in drums, still at 20/40 per Sheet 1 GN4. Art.…
• Cone SIZE class is not carried. RSD 1135.01 requires 36-inch cones on freeways and interstates and permits 28-inch as the minimum everywhere else. The estimator has one undifferentiated 'cone' class, so a freeway job returns a cone count at the wrong unit cost and the wrong truck volume.
• Skinny drums are a separate North Carolina device class (RSD 1180.01) that may substitute for cones on two-lane work. The estimator has no such class, so a job planned on skinny drums is priced as cones.
• Sequential flashing warning lights are not emitted as a BOM line. 2024 Std. Spec. Section 1140 verbatim: 'Drums are the only channelizing device allowed to mount sequential flashing warning lights' and 'The number of lights used in the drum taper shall equal the number of drums used in the taper.'…
• The only minimum device count NCDOT publishes is '5 DRUMS @ 20' SPACING' called out at the 'BEGINNING OF MERGE TAPER' on RSD 1101.02 Sheet 7 of 19 (undivided multi-lane roadway, center lanes closed), revision 1-24. Sheet 7 is the TA-30 configuration. min_devices_in_taper is left null: NC publishes…
• Multi-lane and divided runs follow their governing sheet; TA-10 at >=45 mph does NOT. RSD 1101.02 Sheet 1 of 19 (two-lane two-way flagging / pilot car) General Note 4 asks 40 ft in tapers and shifts and 80 ft in tangents, and Sheet 17 of 19 (portable temporary signals) asks 80 ft in tangents; this…
• NC's two-way traffic taper: the NC reference prices TA-10 at 50 ft (nc.js:191), so this file does too (ta_overrides.ta-10.add_segments approach_taper_50). SME-OPEN: nc.js:169 prints '60-100 ft maximum'; RSD 1101.11 Sheet 1 prints '50 - 100 FEET MAXIMUM'.
• No deviation on the downstream taper. RSD 1101.11 Sheet 1 verbatim: 'DOWNSTREAM TAPER ...........................................100 FEET MAXIMUM'. MUTCD 11th Ed Table 6B-3 gives the downstream taper as '50 feet minimum, 100 feet maximum' (page 775 of the 11th Edition Part 6), which is the same…
• The North Carolina Supplement to the MUTCD was never retrieved. It is named as binding in 2024 Std. Spec. Section 101, but NCDOT's Transportation Mobility and Safety link is still titled 'MUTCD (2009 NC Supplement)' and did not resolve to a document, while a January 2026 NCDOT guideline cites the…
• The NCDOT Maintenance/Utility Traffic Control Guidelines (MUTCG) — the document closest to short-duration utility work — is published only as scanned image PDFs and was not OCR'd. It may carry maintenance-specific device counts, spacings and short-duration exemptions that differ from the…
• NC's 'L' Distance Table stops at 70 mph and a 12 ft offset, while the buffer table runs to 80 mph. This file runs the printed formula above 70 mph and above a 12 ft offset, which reproduces the table's basis but is not something the drawing explicitly authorizes. Confirm with NCDOT WZTC before…
• No North Carolina TA atlas is mapped: governing_sheets is unset, so the component list in each result is the federal figure's, amended by the ta_overrides from the NC reference. NCDOT's own configurations live on RSD 1101.02 Sheets 1-19 and RSD 1101.04 and have not been mapped to TA numbers.
• Charlotte has its own overlay (--jurisdiction charlotte). Raleigh, Durham and Wilmington are not researched; a city-street job there may carry requirements this file does not contain.
• RSD 1101.04 Sheet 1 of 2 (shoulder closures on divided facilities, page 32 of the Division 11 Combined PDF) DOES dimension the shoulder taper - both details label it '1/3 L' - and General Note 2 verbatim: '2- PLACE DRUMS IN THE SHOULDER TAPER AT THE MAXIMUM SPACING EQUAL IN FEET TO THE POSTED…
• RSD 1101.11 Sheet 2's buffer and sight-distance columns are keyed to DESIGN SPEED ('DESIGN SPEED (MPH)'), while RSD 1101.11 Sheet 1's 'L' table and Sheet 4's sign chart are keyed to POSTED SPEED. This engine has one speed input and feeds the posted speed to all three, so the buffer is read off the…
• NC TA-30/30R/33 sign set follows nc.js SIGN_SEQUENCES (no W20-1); TA-10 keeps W20-1 per nc.js:264. SME-OPEN: TCP-Rules candidate-rules/canonical-migration/*ncdot* (NCDOT SP-11299 'Begin Road Work') emit W20-1 at 4A ON TOP of W20-5/W4-2/W20-5 on TA-30/30R/33 - one more sign per approach than this…
• Shadow vehicle below 45 mph is not priced: nc.js:329 makes the TMA optional below 45 (roll-ahead only).
• TA-10 approach/departure taper devices are length-based at NC taper spacing (20 ft below 45 mph; S at 45+), not a fixed count: 50 ft -> 4 devices below 45 mph.
• NC caps a work zone at 2 miles (10,560 ft, nc.js:327); the estimator does not warn above it.
• TA-10 device spacing follows 2024 Std. Spec. Art. 1135-3 / 1130-3 (cones 20/40 ft below 45 mph; drums S/2S at 45 mph and above). nc.js publishes no device spacing. The onboarded NC TA-10 rules place cones at 15 ft in every segment up to 45 mph and 40 ft at 55-65 mph: about 45 line devices at 45…
• SME-OPEN, TA-30R: the NC TA-30R layout marks the TMA mandatory (nc.js:597); the NCDOT equipment table makes it optional below 45 mph (nc.js:329). Below 45 mph the TMA is priced only under --include-optional.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: Figure 6P-33 / Jan 2026 Table 6B-3: shoulder taper 0.33 L, one third of the merging taper length at W = 12 ft (220 ft at 55 mph) (TCP-Rules origin/main src/data/reference/delaware.js:1793-1810). Trigger: a closed paved shoulder of 8 ft or more (Figure 6P-33 note 3, Guidance); this engine's default shoulder is 8 ft.
• buffer: Figure 6P-33 marks the buffer '(optional)'; not priced (TCP-Rules origin/main src/data/reference/delaware.js:1831-1855).
• sign_spacing: MUTCD Table 6B-1 row 'rural'; delaware override (A 500->1000, B 500->1500, C 500->2640) per Figure 6P-33 Expressway/Freeway row at every speed (delaware.js:1865-1884)
• taper_spacing: Jan 2026 §6K.01 para 04 (Delaware Revision): taper 1 x speed, tangent 2 x speed, no cap. Guidance, a ceiling (TCP-Rules origin/main src/data/reference/delaware.js:748-775, LOOKUP.deviceSpacing 3740-3760). (device_spacing.by_class.cone)
• tangent_spacing: Jan 2026 §6K.01 para 04 (Delaware Revision): taper 1 x speed, tangent 2 x speed, no cap. Guidance, a ceiling (TCP-Rules origin/main src/data/reference/delaware.js:748-775, LOOKUP.deviceSpacing 3740-3760). (device_spacing.by_class.cone)
• departure_spacing: Jan 2026 §6K.01 para 04 (Delaware Revision): taper 1 x speed, tangent 2 x speed, no cap. Guidance, a ceiling (TCP-Rules origin/main src/data/reference/delaware.js:748-775, LOOKUP.deviceSpacing 3740-3760). (device_spacing.by_class.cone) (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: Jan 2026 §6K.01 para 04 (Delaware Revision): taper 1 x speed, tangent 2 x speed, no cap. Guidance, a ceiling (TCP-Rules origin/main src/data/reference/delaware.js:748-775, LOOKUP.deviceSpacing 3740-3760). (device_spacing.by_class.cone)

• drum when {"night": true, "road_types": ["freeway"]}

ta-10, ta-30, ta-30r, ta-33

• Delaware requires a lateral buffer of one full travel lane on interstates, freeways and expressways unless temporary traffic barrier separates the work area from the traveled way (2011 Rev 3 §6C.06 para 15, DE Revision). The engine models the longitudinal buffer only and has no lateral-buffer…
• Night cones: the Jan 2026 edition allows retroreflective cones at night off Interstates/Expressways at 25 ft taper / 40 ft tangent (§6K.03 para 03A), and the cone class is priced at that spacing when --night is supplied. The 2011 Rev 3 bans night cones (three exceptions, §6F.64 para 3A-3C) and the…
• PCMS shoulder closure: 2011 Rev 3 §6F.60 para 30B asks for six drums or cones ahead of each shoulder PCMS. The reference is silent on whether it survives into the Jan 2026 edition (SME-open). No PCMS line item is emitted.
• Jan 2026 §6K.05 para 01 (Delaware Revision, Standard) requires prismatic retroreflective stripes on drums; 2011 Rev 3 §6F.63 para 01B only recommended prismatic sheeting (TCP-Rules origin/main src/data/reference/delaware.js:850-852). The engine has no sheeting grade, so the unit cost is low.
• Warning lights on channelizing devices should not be used on state-maintained roads unless approved by DelDOT Traffic (2011 Rev 3 §6F.63 para 10A (DE Revision); Jan 2026 §6K.01 para 07A and §6L.07 para 03A carry it forward, TCP-Rules origin/main src/data/reference/delaware.js:1073-1078). The…
• Extension 2 x S past the downstream end of the transition (Jan 2026 §6K.01 para 05, TCP-Rules origin/main src/data/reference/delaware.js:765-767). The engine's departure key is a pitch, not a length: 110 ft of device run at 55 mph is not counted.
• No minimum device count per taper: neither edition publishes one (TCP-Rules origin/main src/data/reference/delaware.js:748-775). The first-four-devices-at-25-ft rule implies at least four but never says so.
• First four taper devices at no more than 25 ft (Jan 2026 §6K.01 para 04A = 2011 §6F.63 para 08A; TCP-Rules origin/main src/data/reference/delaware.js:757-759). The engine carries one spacing per run, so formula tapers priced at 1 x S above 25 mph run 1-2 devices short; TA-10 fixed 50-ft tapers and…
• Taper device pitch in one-lane two-way and downstream tapers: §6B.08 para 12/14 say ~20 ft, §6K.01 para 04 says 1 x S. Open in the reference (GAP-DE-TAPER-DEVICE-SPACING, TCP-Rules origin/main src/data/reference/delaware.js:721). This overlay uses 1 x S on the departure taper; ta-10 prices each…
• ta-33 is pinned to the Expressway/Freeway row (1,000 / 1,500 / 2,640) at every speed via ta_overrides.ta-33.sign_spacing (TCP-Rules origin/main src/data/reference/delaware.js:1865-1884). Placement only; counts are unaffected.
• TA-30 centreline device run: Figure 6P-30 note 3 (Standard) puts a second device run on the centre line when only the left lane is closed on an undivided road. The reference records it as not expressible and emits nothing (GAP-DE-TA30-CENTERLINE, TCP-Rules origin/main…
• Shifting taper: L is preferred on state-maintained roads (Jan 2026 Table 6B-3 note); this overlay prices 0.5 L. On ta-15 / ta-24 / ta-25 / ta-26 a state-road job is priced at about half the shifting-taper devices DelDOT prefers.
• DelDOT Interim Guidance "Detours and Lane Closures on Interstates, Freeways, or Expressways" (December 12, 2025) was reached but no driver was extracted from it into this overlay. Any interstate lane-closure or detour constraint it imposes beyond DE MUTCD Part 6 is unmodelled.
• Edition: the Jan 2026 Delaware Edition is PENDING APPROVAL with no Register adoption notice; the SME's working copy is the 2011 Rev 3 (TCP-Rules origin/main src/data/reference/delaware.js:337-463). If reviewers hold plans to 2011 Rev 3, the values listed in the device_spacing warning apply instead…

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MUTCD Table 6B-2 (Option, 6B.06 para 11)
• sign_spacing: MUTCD Table 6B-1 row 'rural'
• taper_spacing: 6K.01 para 04 (Guidance)
• tangent_spacing: 6K.01 para 04 (Guidance)
• departure_spacing: 6K.01 para 04 (Guidance) (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: 6K.01 para 04 (Guidance)

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: ETCL 2006, 2008, 2008A, 2010, 2010A, 2025A, 2026A print 'SHLD. TAPER' = '1/3 L', next to the merging taper L: 220 ft at 55 mph on a 12-ft lane. The plans govern over the MUTCD (Std Spec 740.01).
• buffer: MUTCD Table 6B-2 (Drawn and dimensioned on ETCL 2006/2008/2010 (plans govern, Std Spec 740.01); length per MUTCD Table 6B-2)
• sign_spacing: ALDOT ETCL 2002/2006/2008/2010 ladder row 'rural'
• taper_spacing: Taper: ETCL Note 736, 'CHANNELIZING DRUMS SHOULD BE PLACED ON 25 FOOT INTERVALS THROUGHOUT ALL TAPERS' - a flat 25 ft, not the federal 1xS. Tangent: 50 ft O.C. drawn on every non-freeway sheet (ETCL 2002 '50'' between cones; ETCL 2006 / 2008 / 2008A / 2025A '50' O.C.'); 80 ft O.C. on the freeway/interstate sheets (ETCL 2010 / 2010A / 2026A '80' O.C.'); applied at 60 mph and up as a speed proxy…
• tangent_spacing: Taper: ETCL Note 736, 'CHANNELIZING DRUMS SHOULD BE PLACED ON 25 FOOT INTERVALS THROUGHOUT ALL TAPERS' - a flat 25 ft, not the federal 1xS. Tangent: 50 ft O.C. drawn on every non-freeway sheet (ETCL 2002 '50'' between cones; ETCL 2006 / 2008 / 2008A / 2025A '50' O.C.'); 80 ft O.C. on the freeway/interstate sheets (ETCL 2010 / 2010A / 2026A '80' O.C.'); applied at 60 mph and up as a speed proxy…
• departure_spacing: Taper: ETCL Note 736, 'CHANNELIZING DRUMS SHOULD BE PLACED ON 25 FOOT INTERVALS THROUGHOUT ALL TAPERS' - a flat 25 ft, not the federal 1xS. Tangent: 50 ft O.C. drawn on every non-freeway sheet (ETCL 2002 '50'' between cones; ETCL 2006 / 2008 / 2008A / 2025A '50' O.C.'); 80 ft O.C. on the freeway/interstate sheets (ETCL 2010 / 2010A / 2026A '80' O.C.'); applied at 60 mph and up as a speed proxy…
• buffer_tangent_spacing: Taper: ETCL Note 736, 'CHANNELIZING DRUMS SHOULD BE PLACED ON 25 FOOT INTERVALS THROUGHOUT ALL TAPERS' - a flat 25 ft, not the federal 1xS. Tangent: 50 ft O.C. drawn on every non-freeway sheet (ETCL 2002 '50'' between cones; ETCL 2006 / 2008 / 2008A / 2025A '50' O.C.'); 80 ft O.C. on the freeway/interstate sheets (ETCL 2010 / 2010A / 2026A '80' O.C.'); applied at 60 mph and up as a speed proxy…

ta-10, ta-30, ta-30r, ta-33

• R2-1 work-zone speed assembly at a MAXIMUM 3-MILE INTERVAL through the project limits (ETCL Note 748; Note 749 covers off-hours cover/remove). The engine emits no R2-1 and has no repeat-by-distance sign mechanism, so a 6-mile Alabama project is short at least 2 R2-1 assemblies per direction.
• RA-1 Rebuild Alabama project sign, required on EVERY project on a state route or interstate, right-hand side, removed at completion (ETCL Note 719). Not emitted; every Alabama state-route job is short 1 sign.
• RS-2 'WHEN WORKERS ARE PRESENT BEGIN HIGHER FINES' and RS-3 'END HIGHER FINES', posted at the project beginning and end with an R2-1 (ETCL Note 748). Not emitted; every Alabama job is short 2 signs.
• shoulder drop-off signing: an edge-of-pavement drop-off >= 3 in requires shoulder drop-off signs every 1/2 mile (ETCL Note 727; Note 728 is the ~2-in-or-less centerline exception). The estimator takes no drop-off depth input, so this conditional sign run is never priced.
• ALDOT required sign SIZES supersede the Standard Highway Signs drawings unless the engineer approves otherwise: G20-1 48x24, G20-2 48x24, R2-1 30x36, RS-2 48x60, RS-3 48x48, W20-1 48x48 in (ETCL-2024 Temporary TCP plan sheet, Required Sign Sizes table). The BOM carries sign codes, not sizes, so an…
• Type XI fluorescent-orange reflective sheeting on ALL black-on-orange construction signs (ETCL Note 701; Std Spec Articles 880.02/880.03). This is a unit-cost driver on every orange sign in the BOM and the estimator carries no sheeting grade.
• Device spacing OUTSIDE tapers and tangents: 10 ft in radii (ETCL Note 732) and 50 ft protecting completed work not open to traffic (ETCL Note 733). The engine has no radius or completed-work segment, so neither run is counted.
• holiday lane-closure blackout, 11:59 PM Dec 23 through 6:00 AM Jan 2, plus other state holidays at the project engineer's discretion (ETCL Note 752). A scheduling cap, not a quantity; the estimator takes no date.
• device storage setback: >= 30 ft from the roadway during non-working hours (ETCL Note 702), >= 30 ft from the traveled way for contractor vehicles during working hours (TCP Notes sheet 3 Note 19), and drums shifted to the shoulder edge during non-working hours and peak periods (ETCL Note 735).…
• W8 surface-condition signs: conditions running more than 1 mile require signs prior to the condition and at 1-mile increments (ETCL Note 726). No W8 series is emitted and no repeat-by-distance mechanism exists.
• Sign mounting: all signs post-mounted where the work period exceeds 4 days, except barricade-mounted ones; temporary supports mount at a 1-ft minimum height (TCP Notes sheet 3 Note 22; ETCL Note 710). The BOM carries no mounting class, so a >4-day Alabama job is priced on the same sign line as a…
• device gating: crashworthy per NCHRP Report 350 Cat 1-4 (Std Spec 740.02(b)), AFAD and sign stands from ALDOT Department List IV-3, portable rumble strips from List IV-4, pilot car a registered on-road motor vehicle (740.02(e)). TMA: Std Spec 2026 728.02 p.623 sets NCHRP 350 TL-2 at a 45-mph…
• PTCI regime: a Project Traffic Control Inspector per project, Form C-25 daily inspection plus periodic nighttime inspections, ATSSA Quality Guidelines acceptance (Constr Manual Div 700 SG-1). Labour the BOM does not carry.
• ETCL project-limit trains (2002 two-lane; 2005/2007/2009/2024/2025/2026 multilane) are per project, not per closure. Carried as option aldot_project_limits, off by default: on multilane TAs W20-1 x3 and G20-1 per side plus G20-2 at the end; on TA-10 (two-lane sheet) G20-1 per direction and the…
• ETCL Note 736 (25-ft taper interval) names drums and is a 'should'. Drums are the default class for the multilane TAs. On freeways ETCL 2010 GN 2 allows (Option) 36-in cones in tangents by day and 42-in cones at night, with drums required in tapers; this estimate prices the drum layout, which…
• TA-10 one-lane two-way taper: ETCL 2002 counts one cone per foot of lane width, applied as fixed_count = W. The taper LENGTH (50-100 ft) does not change that count.
• Tangent spacing is keyed to speed, not facility: ETCL 2010 draws 80 ft O.C. on freeways/interstates and 50 ft O.C. on every other sheet. The engine has no road-type-keyed tangent, so on TA-33 80 ft applies at 60 mph and up; an interstate posted below 60 mph is priced at 50 ft, which adds devices,…

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MUTCD Table 6B-2 (REQUIRED on DOT&PF contracts: SSHC 2020 643-1.03 (Table 6C-2 = 11th Ed 6B-2) unless site conditions prohibit. Option (MUTCD 6B.06 para 11) otherwise.)
• sign_spacing: MUTCD Table 6B-1 row 'rural'
• taper_spacing: F10: taper 1.0*S and tangent 2.0*S defer (ATMS publishes no replacement for MUTCD 6K.01 para 04). Departure 20 ft per MUTCD 11th Ed 6B.08 para 12 (Guidance, p.776; ATMS silent, so adopted unchanged): downstream taper devices 'at a spacing of approximately 20 feet'.
• tangent_spacing: F10: taper 1.0*S and tangent 2.0*S defer (ATMS publishes no replacement for MUTCD 6K.01 para 04). Departure 20 ft per MUTCD 11th Ed 6B.08 para 12 (Guidance, p.776; ATMS silent, so adopted unchanged): downstream taper devices 'at a spacing of approximately 20 feet'.
• departure_spacing: F10: taper 1.0*S and tangent 2.0*S defer (ATMS publishes no replacement for MUTCD 6K.01 para 04). Departure 20 ft per MUTCD 11th Ed 6B.08 para 12 (Guidance, p.776; ATMS silent, so adopted unchanged): downstream taper devices 'at a spacing of approximately 20 feet'.
• buffer_tangent_spacing: F10: taper 1.0*S and tangent 2.0*S defer (ATMS publishes no replacement for MUTCD 6K.01 para 04). Departure 20 ft per MUTCD 11th Ed 6B.08 para 12 (Guidance, p.776; ATMS silent, so adopted unchanged): downstream taper devices 'at a spacing of approximately 20 feet'.

ta-10, ta-30, ta-30r, ta-33

• AFAD is PROHIBITED in Alaska (ATMS 6L.02). The federal Note 5 AFAD option is dropped from TA-10 output. The engine takes no control-method input, so it cannot reject an AFAD layout: the two-flagger labour line stands, and an AFAD line must not be priced.
• Flagger and Worksite Traffic Supervisor certification (SSHC 643-1.04 as amended by HSM20-45, 01/02/2024, stdmods_eng_20.pdf pp.32-33). Flaggers: ATSSA Flagger/Flagging Instructor, LIUNA Flagger/TCT, IMSA WZTTC (IMSA void after 2026-12-31). WTS: ATSSA or LIUNA TCS, IMSA WZTTC (void after…
• Night flagger illumination is a Standard (federal and ATMS 6N.18.06; Fig 6P-10 note 7 is unrevised federal text). Alaska adds SSHC Table 643-4 (p.415): one >=2,000 W balloon light within 30 ft of each flagger; not required in the SSHC Table 643-1 (p.401) latitude/date window (none south of 61 N;…
• STOP/SLOW paddle sizing: 24 in wide with 8-in Series C letters on all roads, 18 in / 6-in only on local roads <=25 mph (ATMS 6D.02A; SSHC 643-2.01.16). Hand-signaling without a paddle is prohibited in one-lane two-way operation except for emergency responders and uniformed LEO (ATMS 6D.05.02).…
• Double-fine-zone signing (ATMS 6G.08; 13 AAC 40.010; 17 AAC 99.010). At minimum, per direction: R16-100 plus the Work Zone Speed Limit assembly (R2-1 + G20-5aP + R2-6aP) at the start (6G.08 05J), R16-101 plus the resumed R2-1 at the end (05K/05L), the assembly repeated at <=2 mi (05N), and R2-6aP…
• ROAD WORK NEXT XX MILES (G20-1) should be installed in advance of long-term stationary zones longer than 2 miles (ATMS 6H.35). Not emitted; a >2-mile Alaska zone is one sign short per approach.
• STOP FOLLOW PILOT CAR WHEN GOING YOUR WAY (R16-111) may be posted WITHOUT a flagger on minor side-road approaches during pilot-car hours per an approved TCP (ATMS 6E.04.04A), and pilot-car rigs need a rear-mounted G20-4 at >=5 ft plus a two-way radio (SSHC 643). The engine has no pilot-car mode,…
• Alaska-specific Road Closed family: ROAD CLOSED AVALANCHE AREA (R11-101) and LANE CLOSED (R11-102) on Type 3 barricades at cross-street intersections inside a multi-lane closure (ATMS 6G.04). No asset exists in the sign catalog, so these are never emitted.
• device_class prices 28-in cones (SSHC 643-2.01 item 7), which matches the ATMS 6K.04 28-in height for tubular markers on high-speed/night work. Not carried: the tubular-marker 18-in / 2-in minimums, and the Type 3 barricade sign-coverage Guidance (should not exceed 50% of the top two rails / 33%…
• TMA host vehicle must weigh at least 15,000 lb, maximum per the manufacturer (SSHC 643-2.01.17). The federal ta-33 template does carry a TMA line, but it is optional (Note 4 'may') and prints only under --include-optional; the engine carries no vehicle weight either way, so the 15,000-lb host…
• High-visibility apparel: ANSI/ISEA 107-2004 (labels per 107-2004 or 107-2010) Class 2 tops (always) and Class E bottoms (at night for all workers, at all times for the WTS, traffic-control staff and flaggers), Level 2 retroreflective (SSHC 643-3.11). Not a BOM class; it is a crew-outfitting line…
• Positive protection guidance is elaborated in Alaska — consider temporary barrier for no-escape zones (tunnels, bridges), long-term (>=2-week) stationary zones, preconstruction operating speeds >=45 mph and overnight roadside hazards; vertical curb is not a substitute and segments must be…
• Reduced speed zoning routes through DOT&PF P&P 05.05.020 (ATMS 6B.01.17-19A): avoid where practical, <=10 mph reduction preferred, >10 mph only where restrictive features require it. Signed with the Work Zone Speed Limit assembly SPEED LIMIT (R2-1) + WORK ZONE (G20-5aP) + FINES DOUBLE (R2-6aP)…
• Table 6B-3's downstream taper range 50-100 ft defers un-amended, and this file keeps the federal 100-ft maximum in downstream_taper_ft, spaced at 20 ft (6B.08 para 12). Alaska publishes no preferred length, so a plan drawn at the 50-ft minimum carries about 3 fewer devices in the departure taper.
• Three low-severity ATMS specs carry no BOM line and are flagged nowhere else in this file: the flagger sign shall be removed within 15 minutes if flagging is suspended or ended (ATMS 6H.15.03A); rural side-of-road signs mount min 5 ft to the near pavement edge, post-mounted rural >=7 ft,…
• Default shoulder width (8 ft) could not be verified: no Alaska source (ATMS 2026, SSHC 2020 643, Standard Plans index 2026-03-09) sets one. The federal 8-ft default is kept; it moves only the optional shoulder taper.
• Divided-highway sign duplication could not be verified: ATMS 6F.02 para 01 (Guidance, p.180) says right side, para 02 (Option) allows both sides for special emphasis, and no Alaska TA sheet rules either way. The federal Fig 6P-33 two-side posting is kept (TA-33: 6 required signs; 3 if one-side).

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: ARDOT TC-3 (eff 08-14-2025) panels A/C: buffer 500' MIN. (taper end to arrow-panel truck)
• sign_spacing: ARDOT TC-3 panel A row 'freeway'; arkansas override (B 1500->1640) per ARDOT TC-3 (eff 08-14-2025) panel A (4-lane divided, short duration): W4-2 1000' before the taper, W20-5 1/2 MILE 1640' further, W20-1 1 MILE 2640' further; no speed or facility-class condition
• taper_spacing: ARDOT TC-3 (eff 08-14-2025) panels A/C: channelizing devices 25' O.C. alongside the work area (panel C labels them TRAFFIC DRUMS); GN 12: tubular markers at 10' O.C. only where space prevents drums.
• tangent_spacing: ARDOT TC-3 (eff 08-14-2025) panels A/C: channelizing devices 25' O.C. alongside the work area (panel C labels them TRAFFIC DRUMS); GN 12: tubular markers at 10' O.C. only where space prevents drums.
• departure_spacing: ARDOT TC-3 (eff 08-14-2025) panels A/C: channelizing devices 25' O.C. alongside the work area (panel C labels them TRAFFIC DRUMS); GN 12: tubular markers at 10' O.C. only where space prevents drums. (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: ARDOT TC-3 (eff 08-14-2025) panels A/C: channelizing devices 25' O.C. alongside the work area (panel C labels them TRAFFIC DRUMS); GN 12: tubular markers at 10' O.C. only where space prevents drums.

• drum when {"divided": true, "min_days": 2}

ta-10, ta-30, ta-30r, ta-33

• ARDOT TC-2 GN 7, TC-3 GN 10 (eff 08-14-2025), TC-6 GN 3 (eff 04-09-2026): each trailer arrow panel or PCMS on or next to the shoulder, not behind positive barrier, shall carry conspicuity material and 5 traffic drums on the traffic side; +0..5 drums per shoulder-parked trailer, not emitted…
• Project-level signing (ARDOT TC-6 A/B, TC-1A, eff 04-09-2026): WZ-4 'STATE LAW NO HAND-HELD PHONE USE BY DRIVER WORK ZONE' ((2) 78x60 on freeways, (1) 36x54 otherwise); WZ-1 photo-enforced (2, 84x60) only if and where directed by the Engineer (TC-6). 0 per short-term closure; +2-4 panels per…
• G20-1 ROAD WORK NEXT XX MILES should be used on jobs over 2 miles (ARDOT TC-3 GN 7, TC-6 GN 2); not emitted.
• Work-zone speed reductions only when designated in the plan: 55->45 / 65->55 step-downs with R2-1 + W3-5, extra R2-1 every 1 mile max (ARDOT TC-2 GN 2/3, TC-3 GN 1-3). The estimator takes one speed; not emitted.
• Departure taper device spacing is unverifiable: ARDOT prints no downstream-taper spacing; TC-3 panels A/C draw about 4-5 devices over 100 ft (~25 ft), TC-2 panel F about 3, with no written value. The federal fallback (taper spacing S) is kept; 1-3 devices at stake per taper.
• TA-10 buffer is unverifiable: ARDOT TC-2 panel E draws no buffer dimension (devices 'extended to a point where they are visible to approaching traffic', note 3). The federal 6B-2 buffer (495 ft @55, 6 devices) is kept as an inference.
• Speed-to-road-type mapping is unverifiable: ARDOT publishes no speed-to-road-type table; the TC drawings key on facility type (2-lane / undivided / divided / fully controlled access). The Keryk federal speed bands are kept.
• TA-30R buffer is a federal 6B-2 / Fig 6P-33 inference (Table 6B-2 by speed); ARDOT TC-2 panel F draws none, so TA-30R and TA-30 (same panel) leave it optional.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MUTCD Table 6B-2 (Option, CA MUTCD 2026 Sec 6B.06 para 11 (11th Ed numbering); federal-identical values and modality.)
• sign_spacing: MUTCD Table 6B-1 row 'rural'
• taper_spacing: CA MUTCD 2026 Table 6K-101(CA) Maximum Spacing of Channelizing Devices (6K p.1305), Guidance on ALL roads via Sec 6K.01 para 05a (p.1293) and 6P.01 para 08: Taper 20/25/30/35/40/45 ft at 20-45 mph, then 50 ft at 50-75 mph = min(S, 50). Tangent 2S up to 50 mph, then 100 ft at 55-75 mph = min(2S, 100). Footnote *: 'Maximum channelizing device spacing for all speeds on downstream tapers is 20 feet'…
• tangent_spacing: CA MUTCD 2026 Table 6K-101(CA) Maximum Spacing of Channelizing Devices (6K p.1305), Guidance on ALL roads via Sec 6K.01 para 05a (p.1293) and 6P.01 para 08: Taper 20/25/30/35/40/45 ft at 20-45 mph, then 50 ft at 50-75 mph = min(S, 50). Tangent 2S up to 50 mph, then 100 ft at 55-75 mph = min(2S, 100). Footnote *: 'Maximum channelizing device spacing for all speeds on downstream tapers is 20 feet'…
• departure_spacing: CA MUTCD 2026 Table 6K-101(CA) Maximum Spacing of Channelizing Devices (6K p.1305), Guidance on ALL roads via Sec 6K.01 para 05a (p.1293) and 6P.01 para 08: Taper 20/25/30/35/40/45 ft at 20-45 mph, then 50 ft at 50-75 mph = min(S, 50). Tangent 2S up to 50 mph, then 100 ft at 55-75 mph = min(2S, 100). Footnote *: 'Maximum channelizing device spacing for all speeds on downstream tapers is 20 feet'…
• buffer_tangent_spacing: CA MUTCD 2026 Table 6K-101(CA) Maximum Spacing of Channelizing Devices (6K p.1305), Guidance on ALL roads via Sec 6K.01 para 05a (p.1293) and 6P.01 para 08: Taper 20/25/30/35/40/45 ft at 20-45 mph, then 50 ft at 50-75 mph = min(S, 50). Tangent 2S up to 50 mph, then 100 ft at 55-75 mph = min(2S, 100). Footnote *: 'Maximum channelizing device spacing for all speeds on downstream tapers is 20 feet'…

• cone_28in when {"road_types": ["freeway"]}
• cone_28in when {"min_speed": 45}
• cone_28in when {"night": true}

ta-10, ta-11, ta-30, ta-30r, ta-33

• Downstream taper: Table 6B-3(CA)'s 50 ft is the minimum column (footnote *** caps the maximum at 100 ft; 6B.08 para 12: 50 min / 100 max). ta-33 takes the 100 ft drawn on CA Fig 6P-33 panel A ('100 ft (optional)'), priced only under --include-optional, at 20-ft spacing (Table 6K-101(CA) footnote…
• Buffer on downgrades, Table 6B-2(CA): the engine has no grade input and no per-grade buffer column, so every California estimate uses the level Table 6B-2 value. On a sustained downgrade the buffer is about 1 to 22 percent longer (e.g. 55 mph -6% = 553 vs 495 ft; 70 mph -9% = 891 vs 730 ft) and…
• C30(CA) LANE CLOSED repetition: required ('shall') every 2,000 ft only on TA-37 (Fig 6P-37 Note 10, official 6P p.1426), which has no template here; optional on CA Fig 6P-33 (p.1418) and Fig 6P-18. State highways: every 1,000 ft on freeways (2025 Std Plan T10 Note 5), 500-1,000 ft on conventional…
• The CA MUTCD 2026 TA figures served here use the federal W/G codes. California-only codes (C30(CA), C45(CA), C24(CA), C30A(CA), SC9/SC13/SC19/SC20(CA)) appear only as CA additions, and the engine emits them only where an option adds them. Caltrans Standard Plan sheets were not checked for code…
• California-original and California-variant typical applications: TA-101(CA) (Right Lane and Bike Lane Closure on Far Side of Intersection, Fig 6P-101(CA)) and TA-102(CA) (Lane Shift on Road with Low Traffic Volumes, Fig 6P-102(CA)) have no templates in this engine, and neither do ta-19 or ta-51. A…
• Std Spec Sec 12-3.01A device crashworthiness: California codifies Category 1 (under 100 lb, self-certified: cones, drums, delineators, channelizers), Category 2 (under 100 lb, on the FHWA acceptable-hardware list, labeled: barricades, portable sign supports) and Category 3 (100 lb and over, on the…
• Type K temporary railing sunset, Std Spec Sec 12-3.20C(2)(c): 'Do not install Type K temporary railing on projects advertised after December 31, 2026', minimum 160 ft where used. The engine emits no longitudinal-barrier line item and has no advertisement-date input, so this hard date is never…
• COZEEP / MAZEEP enhanced CHP enforcement: a California-only paid-enforcement program recommended on reduced-speed zones. It is a labour and agreement line, not a material, and is not priced here. The program particulars (Construction Manual 4-12, CPD 21-23, Pocket Guide) are not verified against…
• State highways (Caltrans 2025 Standard Plans T9-T27, which CA MUTCD 6B.08 para 16 says 'should be used' there): T9 Table 1 = Table 6K-101(CA) (encoded). T9 Table 3 advance sign spacing differs from CA 6B-1 at 30-45 mph (Urban >25-40 mph 250/250/250, Urban >40 mph 350/350/350, vs CA…
• The CA MUTCD 2026 'Urban (high speed) 50 mph or more' row at 350/350/350 is unreachable through the speed bands above, which send 50-59 mph to the rural row at 500. See the speed_to_road_type warn; --road-type urban-high recovers it.
• Table 6K-101(CA) Conflict column (S/2, max 25 ft) is California-only. It applies on intermediate and short-term projects with no pavement markings or with markings that conflict with the devices. The engine has no marking-state input, so it is not modelled.
• TA-11: California republishes Fig 6P-11 with no California-specific Part 6 text found. Caltrans Construction Manual 4-12 was not checked for a TA-11 restriction. The ta-11 template runs against California on the federal figure with no California qualifier.
• shoulder_width_ft = 8 is the federal default carried forward, not a California-sourced value. Neither CA MUTCD 2026 Part 6 nor Std Plan T9 publishes a default; the 8-ft figure in CA Fig 6P-33 Note 3 is the trigger for closing a shoulder, not a default width. Pass --shoulder-width on real jobs.
• Transverse cones: CA Fig 6P-37 Note 8 (Standard, TA-37 only) places 3 cones or 2 Type II barricades across the closed lane at the end of each merging taper and every 2,000 ft. TA-37 has no template here, and the rule is not on CA Fig 6P-33, so there are none on ta-33.
• Rumble strip arrays behind the ta-10 'rumble_strips' option (CA Fig 6P-10 Note 15) are not a line item: the option adds only the two C45(CA) signs.

• L: TBM Table 2 (phoenix.js TABLE2_MERGING_TAPER_BY_WIDTH) (printed cell governs) [chandler hands off to phoenix at every speed]
• L_half: MUTCD 6B.08: shifting taper = L/2 [chandler hands off to phoenix at every speed]
• L_shoulder: TBM prints 1/3 L at a 12-ft lane, not at the shoulder width [chandler hands off to phoenix at every speed]
• buffer: 0 ft both ends, TBM publishes no buffer table (phoenix.js BUFFER_POLICY; LOOKUP.bufferSpace) [chandler hands off to phoenix at every speed]
• sign_spacing: sign gap = L (TBM Note 2 / Ch.6 p.52: Distance = L (phoenix.js ADVANCE_SIGN_SPACING). Above 55 mph arizona applies (falls_back_to).) [chandler hands off to phoenix at every speed]
• taper_spacing: TBM Table 2: taper spacing = 1 x S. Cones only are capped at 25 ft (footnote *). No tangent column - federal 2xS (phoenix.js DEVICE_SPACING) [chandler hands off to phoenix at every speed]
• tangent_spacing: TBM Table 2: taper spacing = 1 x S. Cones only are capped at 25 ft (footnote *). No tangent column - federal 2xS (phoenix.js DEVICE_SPACING) [chandler hands off to phoenix at every speed]
• departure_spacing: TBM Table 2: taper spacing = 1 x S. Cones only are capped at 25 ft (footnote *). No tangent column - federal 2xS (phoenix.js DEVICE_SPACING) (no departure-taper column published; taper spacing used) [chandler hands off to phoenix at every speed]
• buffer_tangent_spacing: TBM Table 2: taper spacing = 1 x S. Cones only are capped at 25 ft (footnote *). No tangent column - federal 2xS (phoenix.js DEVICE_SPACING) [chandler hands off to phoenix at every speed]

ta-10, ta-11, ta-15, ta-18, ta-21, ta-22, ta-23, ta-24, ta-3, ta-30, ta-30r, ta-33, ta-5, ta-6

• Contractor identification sign: priced as SPECIAL x1 on the primary approach of every TA. Not modelled: opposing-direction copy and distance (CH-SIGN-POS), size (CH-SIGN-SIZE); colour priced black on orange (CH-5 open).
• EDSM p.196: cones daylight only; replaced with barricades or vertical panels after dark. Vertical panels are the default; a supplied --device-class cone is not switched at night.
• Flag tree (1 per direction, EDSM p.173), R4-7a / R4-8a KEEP RIGHT / LEFT, officer-instead-of-flagger (CH-2): no device type or asset.
• Flags on every sign (EDSM p.159): a crew task, not a plan element (CH-1 closed 2026-09-11).

• L: WATCH D13 taper = A for a right-lane TA-33 (clt.js:893-905)
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: WATCH D13 buffer = A for a right-lane TA-33 (clt.js:856-869)
• sign_spacing: WATCH Note 1 sign spacing (clt.js:831-837) row 'urban-high'
• taper_spacing: WATCH cone spacing by tier: 20 ft <=25 / 40 ft 30-35 / 40 ft >=40, unsplit (clt.js coneSpacingByTier, clt.js:606-610, 796-800). At <=25 mph 20 ft is the only printed spacing, so it applies to taper and tangent. At >=30, 20 ft taper / 40 ft tangent, as the D16/D18 Charlotte candidate rules place them.
• tangent_spacing: WATCH cone spacing by tier: 20 ft <=25 / 40 ft 30-35 / 40 ft >=40, unsplit (clt.js coneSpacingByTier, clt.js:606-610, 796-800). At <=25 mph 20 ft is the only printed spacing, so it applies to taper and tangent. At >=30, 20 ft taper / 40 ft tangent, as the D16/D18 Charlotte candidate rules place them.
• departure_spacing: WATCH cone spacing by tier: 20 ft <=25 / 40 ft 30-35 / 40 ft >=40, unsplit (clt.js coneSpacingByTier, clt.js:606-610, 796-800). At <=25 mph 20 ft is the only printed spacing, so it applies to taper and tangent. At >=30, 20 ft taper / 40 ft tangent, as the D16/D18 Charlotte candidate rules place them. (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: WATCH cone spacing by tier: 20 ft <=25 / 40 ft 30-35 / 40 ft >=40, unsplit (clt.js coneSpacingByTier, clt.js:606-610, 796-800). At <=25 mph 20 ft is the only printed spacing, so it applies to taper and tangent. At >=30, 20 ft taper / 40 ft tangent, as the D16/D18 Charlotte candidate rules place them.

ta-10, ta-30, ta-30r, ta-33

• 2026 WATCH not extracted (clt.js:59-79). D9A (TA-10) and D16A (TA-33) are revised; re-verify every value when it is.
• Sign codes: WATCH prints W21-4 for ROAD WORK AHEAD - a source typo, priced as W20-1 (clt.js:12-13, 52-57). W9-3L/R replaces W20-5L/R (clt.js:11, 412-434).
• TA-30 closed-lane sign (D18, left): this file prices W9-3L (clt.js TA30_GEOMETRY 569-573 'L or R per closed lane side', and the Charlotte candidate rules). SME-OPEN: three of four reference statements give W9-3R for D18: the D18 signCodes table (clt.js:331-337), the W9-3 code table 'Diagram 18…
• TA-30R downstream buffer: clt.js says none (clt.js:751). SME-OPEN: Charlotte candidate rules ta-30r-watch-dia-13-* draw a departure buffer = A.
• TA-33 right lane follows clt.js LOOKUP (D13: taper = buffer = A, signs one side, barricade required, opposing W20-1). SME-OPEN: TA33_GEOMETRY and the candidate rules use D16 values for the right lane too.
• D13 Note 5 / D16 Note 5 diagram switches (work within 350 ft of an intersection -> D14; median too narrow -> D15) are not modelled (clt.js:182-183, 259).
• D16 Note 7: W6-8 may replace the arrow board in daylight (clt.js:291). Not modelled; the arrow board is priced.
• Type III barricades on TA-30 (D18) and on a left-lane TA-33 (D16) are unattended-overnight only and priced as optional (--include-optional). D13 (TA-30R, right-lane TA-33) requires one at all times (D13 Note 2).
• TMA / shadow vehicle: WATCH is silent. The federal template's optional TMA stands.
• D9 departure: the clt.js D9 table lists a 50-ft departure buffer (clt.js:135); TA10_GEOMETRY and the Charlotte candidate rules draw a 50-ft departure taper and no buffer (clt.js:472-481). Priced as taper.
• TAs without a WATCH diagram (TA-3/5/6, 11, 15, 18, 21-26) take the federal taper formula and buffer = A (100/200/350), the clt.js LOOKUP defaults (clt.js:871-873, 906). D16/D18 taper and buffer values apply to TA-30 and TA-33 only (clt.js:6).

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MUTCD Table 6B-2 (Option — S-630-1 GN 24 (length left to the TCP/MHT; Keryk prices MUTCD Table 6B-2, 11th Ed))
• sign_spacing: MUTCD Table 6B-1 row 'rural'; colorado override (A 500->1000, B 500->1500, C 500->2640) per S-630-1 Jul 2026 Sheet 7 Case 10 (four-lane divided lane closure; Cases 1 and 5 match): advance signs at 1000/1500/2640 ft at every speed
• taper_spacing: MUTCD 11th Ed 6K.01 para 04 values, restated by S-630-1 GN 18(a) 'FOR TAPERS AND TRANSITIONS, SPACING EQUALS THE NUMERICAL VALUE OF THE SPEED LIMIT (e.g. 45 MPH = 45 FEET)' and GN 18(b) 'FOR TANGENTS ALONG THE BUFFER SPACE OR WORK AREA, SPACING MAY NOT BE GREATER THAN TWO TIMES THE SPEED LIMIT (e.g. 50 MPH = 50 FEET TO 100 FEET MAXIMUM)'. No departure-taper column is published in S-630-1, so the…
• tangent_spacing: MUTCD 11th Ed 6K.01 para 04 values, restated by S-630-1 GN 18(a) 'FOR TAPERS AND TRANSITIONS, SPACING EQUALS THE NUMERICAL VALUE OF THE SPEED LIMIT (e.g. 45 MPH = 45 FEET)' and GN 18(b) 'FOR TANGENTS ALONG THE BUFFER SPACE OR WORK AREA, SPACING MAY NOT BE GREATER THAN TWO TIMES THE SPEED LIMIT (e.g. 50 MPH = 50 FEET TO 100 FEET MAXIMUM)'. No departure-taper column is published in S-630-1, so the…
• departure_spacing: MUTCD 11th Ed 6K.01 para 04 values, restated by S-630-1 GN 18(a) 'FOR TAPERS AND TRANSITIONS, SPACING EQUALS THE NUMERICAL VALUE OF THE SPEED LIMIT (e.g. 45 MPH = 45 FEET)' and GN 18(b) 'FOR TANGENTS ALONG THE BUFFER SPACE OR WORK AREA, SPACING MAY NOT BE GREATER THAN TWO TIMES THE SPEED LIMIT (e.g. 50 MPH = 50 FEET TO 100 FEET MAXIMUM)'. No departure-taper column is published in S-630-1, so the…
• buffer_tangent_spacing: MUTCD 11th Ed 6K.01 para 04 values, restated by S-630-1 GN 18(a) 'FOR TAPERS AND TRANSITIONS, SPACING EQUALS THE NUMERICAL VALUE OF THE SPEED LIMIT (e.g. 45 MPH = 45 FEET)' and GN 18(b) 'FOR TANGENTS ALONG THE BUFFER SPACE OR WORK AREA, SPACING MAY NOT BE GREATER THAN TWO TIMES THE SPEED LIMIT (e.g. 50 MPH = 50 FEET TO 100 FEET MAXIMUM)'. No departure-taper column is published in S-630-1, so the…

• cone_36in when {"road_types": ["freeway"]}
• cone_36in when {"night": true}

ta-10, ta-11, ta-30, ta-30r, ta-33, ta-5

• Speed-reduction cap. S-630-1 GN 3/4: a regulatory or advisory reduction 'SHALL NOT EXCEED 15 MPH PER SIGN INSTALLATION', and any reduction needs CDOT Form 568. A 65->35 job is two R2-1 steps, not one, plus the R2-12 END WORK ZONE SPEED LIMIT. The estimator takes a single posted speed and emits no…
• GN 4 higher-fines signing. WORK ZONE (G20-5P) and FINES DOUBLE (R2-6P) plaques (GN 4; case drawings also show G20-5aP / R2-6aP) shall be posted every 2,640 ft between the BEGIN and END HIGHER FINES ZONE signs (R2-10 / R2-11, with CO variants R2-10a_CO / R2-11a_CO per Supplement 2B.25). That is…
• GN 8 divided-highway sign duplication is TRUE in Colorado (divided_highway_duplication: true); a TA-5 shoulder closure carries a single W20-1 per the one-shoulder exception. Multi-lane ramps and one-way streets are not a road_type this engine carries, so a ramp or one-way job under any other TA is…
• Cone height should-tier (S-630-1 GN 15): cones should be 36 in at >=45 mph where ADT >= 6,000. The engine has no ADT input, so only the freeway and night 36-in shall-tiers are priced.
• Type 1 barricade prohibition (S-630-1 GN 16): Type 1 barricades shall not be used on freeways, expressways or other roadways at 55 mph or more. No template emits barricades by type and the engine has no substitution path, so nothing flags a prohibited device.
• AFAD substitution (S-630-1 GN 20): 'FLAGGER STATION SHALL COMPRISE OF EITHER A FLAGGER OR AN AUTOMATED FLAGGER ASSISTANCE DEVICE (AFAD).' Federal 6D permits AFADs too. flaggers[] is a head count with no AFAD path, so a CDOT AFAD job prices 2 flaggers and 0 devices.
• Interstate flagging block (S-630-1 GN 21): flagging is not permitted on interstates without Region Traffic Engineer approval. TA-10 carries 2 flaggers unconditionally, so a TA-10 estimate on a Colorado interstate is a plan CDOT would not approve as drawn. The engine has no interstate input.
• Night flagger stations (S-630-1 GN 22): flood lights shall illuminate every flagger station during darkness (500 W minimum quartz, swivel mount, >=8 ft, station plus escape path, no glare). Light plants are not a BOM device class, so a night TA-10 is missing 2 lighting units.
• Two-way traffic on one roadway (S-630-1 GN 17): opposing traffic on one roadway of a normally divided highway shall be separated by approved channelizing devices for the whole length, with temporary concrete barrier through the transition zones. Barrier is length-driven and devices[] holds integer…
• CDOT Guidelines for the Use of Positive Protection in Work Zones (2025) define High Speed as 45 mph or greater and require positive protection where high operating speeds leave workers no escape from traffic. The estimator prices no barrier, shadow vehicle or TMA from these guidelines; their…
• Supplement 6D.03 para 06 requires a retroreflectorized STOP/SLOW paddle at night and permits an emergency flag carrying a STOP (R1-1) or SLOW (W20-8) face, >=18 in wide with 6-in letters, per new Figure 6D-2. Paddles are not a BOM line item here.
• Supplement 6J.01 elevates removal/obliteration of non-applicable long-term pavement markings from should to shall, and 6J.03 requires temporary raised markers in groups of >=3 spaced <=5 ft, every 40 ft. Pavement marking is outside this estimator.
• S-630-1 CASE NO. 1-42 are CDOT's own typical applications. TA-33 is the federal figure amended by Case 10 and TA-10 by GN 18(a) / Cases 17 and 19; no other case is transcribed as a component list, so other TAs use the federal figure with Colorado numeric drivers.
• Unverifiable: TA-30 interior lane closure. S-630-1 has no urban interior-lane typical; Case 9 (freeway center-lane closure, adds W9-3 and W12-1 with 2 arrow panels) is not an analogue. TA-30 stays the federal figure.
• Unverifiable: default shoulder width. Neither S-630-1 nor the Supplement publishes one; shoulder_width_ft 8 is a Keryk assumption (shoulder taper only).

• L: CTCP Plans 1/3 (Rev 03-25): '800' INSTALL 20 TRAFFIC DRUMS @ 40' SPACING', no speed split
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: CTCP Plans 1/3/10 (Rev 03-25): 'SHOULDER * TAPER' 200 ft, 5 devices @ 40 ft (optional)
• buffer: CTCP Plans 1/3 (Rev 03-25): '500' 55 MPH SPEED LIMIT'
• sign_spacing: CTCP plates (Rev 03-25) sign spacing row 'freeway'; connecticut override (C 2640->1300) per CTCP Plans 1/3 (Rev 03-25): W20-1 to W20-5 1300 ft
• taper_spacing: CTCP Plans 1/3 (Rev 03-25): taper drums @ 40 ft, activity area '@ 80' SPACING', no speed split
• tangent_spacing: CTCP Plans 1/3 (Rev 03-25): taper drums @ 40 ft, activity area '@ 80' SPACING', no speed split
• departure_spacing: CTCP Plans 1/3 (Rev 03-25): taper drums @ 40 ft, activity area '@ 80' SPACING', no speed split (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: CTCP Plans 1/3 (Rev 03-25): taper drums @ 40 ft, activity area '@ 80' SPACING', no speed split

• drum when {"road_types": ["freeway"]}
• drum when {"gt_hours": 36}
• cone_42 when {"min_speed": 45}

ta-10, ta-30, ta-30r, ta-33

• Facility class is CT's main decision axis and this estimator has no input for it. CTCP sheet 0.3 pivots the TMA rule (6.a), the arrow-board rule (5.a/5.b) and the PCMS rule (9.a) on limited access, not speed. Here TA-33 is treated as limited access and TA-30/TA-30R/TA-10 as non-limited access at…
• CTCP Plans 1/3 print no buffer for 45-50 mph limited access; the buffer floors key on divided + speed (55/65), so a 45-50 mph TA-33 gets the 200 ft Plans 10/11 buffer.
• CTCP sheet 0.3 Table 1 (freeway 180-780 ft, secondary 165-715 ft) is not modelled. It applies only when the plate taper cannot be achieved; TA-30/TA-30R warn where the plate is shorter.
• Two-TMA minimum: a limited-access lane closure SHALL use a minimum of two TMAs to install and remove (0.3 para 6.a); TA-33 prices 2 required TMAs. Crash rating is NCHRP-350 TL-3 OR MASH TL-3 (Form 818 18.06.02); unresolved: Form 818 9.77-9.81 (MASH-only after 12/31/2019) conflicts on crash rating.
• Arrow board ban for alternating one-way operations and lateral shifts (0.3 para 5.e). TA-10 carries no arrow board, so nothing to remove.
• END ROAD WORK: CTCP sheet 0.6 Note 2 lets AA/A/D be omitted when a larger zone already carries them. The required G20-2 does not model that exception.
• Series 16 on TA-30/TA-30R/TA-10 is optional here: sheet 0.4 is a CTDOT-contract requirement, and the panel size (16-H state roads, 16-M town roads) depends on road ownership, which is not an input.
• TA-10 buffer: CTCP Plan 13 marks '40' BUFFER AREA *' at both ends, optional; no Table 6B-2 buffer. Encoded as a fixed 2 devices on the one buffer segment; the downstream 40 ft buffer is not a template segment.
• HDM 'downstream taper 100 ft PER LANE': the engine carries a single downstream_taper_ft, so a multi-lane departure cannot scale. Single-lane closures are unaffected.
• Flagger count: CTCP Plan 13 draws TWO Trafficpersons, one at each end, matching the ta-10 template's 2. CT adds a positive-control cap the BOM cannot carry: 10-minute maximum single stoppage (0971001A 9.71).
• Alternating one-way cap: sourced as a contract default, not a standard. CTDOT sample MPT (0971001A template) 9.71.01 Secondary Roads: alternating one-way <= 300 ft long, >= 11 ft wide, max one per project, all 'unless specified elsewhere in the Contract'. Project special provisions can change it.…
• Min_devices_in_taper is null: CT publishes DRAWN per-plate counts (Plan 13 5 devices; Plans 10/11 15; Plans 1/3 20) but no speed-indexed minimum-device table.
• Work-zone lane width: 12 ft per lane on limited access and ramps, 11 ft on secondary roads (CTDOT sample MPT 9.71.01, a contract default editable per project); Plans 12/15 draw 11 ft MIN; HDM 14-3.03 design guidance 11 ft. Not a BOM line.
• Parkway facility class (Merritt / Wilbur Cross / Milford SR-796): trucks are prohibited by law, and a permitted vehicle needs two amber strobes and two SMV triangles (0.3 para 11). No parkway road_type exists here and none of that equipment is a BOM class.
• Resolver rule: CT abolished county government in 1960 (PA 152). A CT address must never resolve to a county overlay - municipality, then CTDOT, then MUTCD.
• Operational rules with no BOM line: rolling road block <= 15 minutes on limited-access sign/taper work (0.3 para 4); install/remove sequencing (0.3 para 3.a-3.b); the ban on workers crossing live limited-access lanes (0.3 para 3.f); ATSSA-certified Traffic Control Supervisor on limited access…
• CT catalog codes are not substituted for the MUTCD faces (80-9604 for W20-1, 80-9848/80-9847 for W20-5R/L, 80-9612 for G20-2). Series 16 and FINES DOUBLED carry CT codes because they have no MUTCD code.
• Divided-highway sign duplication is mandatory in CT: 'on multi-lane divided highways advance warning signs shall be installed on both sides' (0.3 Placement of Signs). The ta-33 template posts W20-1, W20-5, W4-2 and G20-2 on both sides at qty 2. FINES DOUBLED and Series 16-E are drawn right side…

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: FDOT Index 102-613 sht 1-4 dimension the shoulder taper 'L/3 (See General Note 4)'. The engine computes L/3 at a 12-ft lane: 180 ft at 45 mph, 280 ft at 70 mph (not 1/3 L at the 8-ft shoulder width: 120 / 187 ft). At narrower lanes the drawing's L/3 is shorter (11 ft at 55 mph: 202 ft, 1 device fewer).
• buffer: MUTCD Table 6B-2 (MANDATORY minimum, Index 102-600 sht 1 Tbl 4 titled 'BUFFER LENGTH B — Min. Length')
• sign_spacing: Index 102-600 sht 1 Tbl 3: one 'Min. X' distance between every sign in the series, 3 rows (Arterials & Collectors <=40 mph 200 ft; >=45 mph 500 ft; Limited Access 1,500 ft) row 'Idx 102-600 sht 1 Tbl 3 row 2: Arterials & Collectors, WZ speed >=45 mph'
• taper_spacing: Index 102-600 sht 1 Tbl 1. Cones and tubular markers are spaced 25 ft in taper and 50 ft on tangent at every work-zone speed, a fixed table, not the federal 1.0*S / 2.0*S heuristic (MUTCD 6K.01 para 04). Barricades, vertical panels and drums: 25/50 ft at <=45 mph, 50 ft taper / 100 ft tangent at >=50 mph.
• tangent_spacing: Index 102-600 sht 1 Tbl 1. Cones and tubular markers are spaced 25 ft in taper and 50 ft on tangent at every work-zone speed, a fixed table, not the federal 1.0*S / 2.0*S heuristic (MUTCD 6K.01 para 04). Barricades, vertical panels and drums: 25/50 ft at <=45 mph, 50 ft taper / 100 ft tangent at >=50 mph.
• departure_spacing: Index 102-600 sht 1 Tbl 1. Cones and tubular markers are spaced 25 ft in taper and 50 ft on tangent at every work-zone speed, a fixed table, not the federal 1.0*S / 2.0*S heuristic (MUTCD 6K.01 para 04). Barricades, vertical panels and drums: 25/50 ft at <=45 mph, 50 ft taper / 100 ft tangent at >=50 mph. (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: Index 102-600 sht 1 Tbl 1. Cones and tubular markers are spaced 25 ft in taper and 50 ft on tangent at every work-zone speed, a fixed table, not the federal 1.0*S / 2.0*S heuristic (MUTCD 6K.01 para 04). Barricades, vertical panels and drums: 25/50 ft at <=45 mph, 50 ft taper / 100 ft tangent at >=50 mph.

ta-10, ta-30, ta-30r, ta-33

• Divided-highway sign duplication is MANDATORY in Florida, not conditional: Idx 102-615 sht 1 GN 6 reads verbatim 'Dual signs are required for divided roadways', and 102-613 sht 1 GN 2 omits the median array only on undivided roads, where federal Fig 6P-33 Note 1 makes the median substitution…
• MAS (Motorist Awareness System) is an FL-only device stack. Idx 102-613 sht 5 Note 1 requires it when all hold: multilane divided, posted >=55 mph, workers present, not barrier-protected, and lane closure >=5 days (FDM 240.2.2.12). TA-33 prices 1 PCMS (2 above 3 lanes per direction, Note 4), 2 PRS…
• TA-10 buffer: Idx 102-603 sht 1 (rev 11/01/25) draws B only between the approach taper and the work area; the standard TA-10 has one B, which the engine prices. A double buffer appears only on the 102-603 sht 2 centerline-encroachment lane shift (<=24 h), out of scope.
• Downstream buffer: FDOT Tbl 4 is titled simply BUFFER LENGTH 'B' with no upstream/downstream split, and neither 102-613 nor 102-600 mandates a downstream buffer length; it is left to the project TTCP on TA-30/TA-33. This engine emits no downstream buffer either.
• Downstream taper: FDOT draws NO downstream taper on the stationary multilane typicals (102-613 sht 1-3 end with buffer B, a tangent run, then G20-2); the only downstream taper in the index is the L/2 return taper on sht 4, which undoes a lane SHIFT. Dropped on ta-33 and ta-30r; FDOT draws none on…
• Work-zone speed reduction is not applied: FDOT's default work-zone speed is the existing posted speed (FDM 240.2.1.2). A reduction (posted >=65 -> -10 mph, posted 60 -> 55 mph) applies only with MAS (Idx 102-613 sht 5 Note 3 / FDM 240.2.2.12) or when the plans call for one (Idx 102-600 sht 3).…
• Speed-reduction SIGNING, a second and separate gap: where a reduction is posted, Idx 102-600 sht 3 Speed Reduction Signing Note 4 requires the reduction be stepped down in 10-mph increments, one step per X, as a W3-5 -> R2-1 -> W20-1F sequence (not used with MAS, per Note 3), and Note 5 requires…
• Minimum work-zone lane widths (11 ft on Interstate, 11 ft on other limited access, 10 ft on other facilities, Idx 102-600 sht 3) are not enforced. Lane width is an input here and it drives L directly, so a job entered at 12 ft on an 11-ft Interstate lane returns an L 70 ft too long at 70 mph (840…
• TMA crash rating: FL Std Spec 102-9.14 replaces the federal 40/45 shadow-vehicle split with a Test Level gate on POSTED speed — TL-3 required at 50 mph and above, TL-2 or TL-3 at 45 mph and below, everything after 1/1/2020 MASH-compliant per Spec 990. The BOM carries TRUCK_MOUNTED_ATTENUATOR as an…
• TMA count on a STATIONARY closure is a genuine FDOT gap: Idx 102-607 codifies 1 shadow vehicle + TMA per closed lane for MOBILE operations only, and 102-613 does not depict the stationary case, leaving it to the project TTCP. Roll-ahead distance has no FDOT numeric at all (Spec 102-9.14 defers to…
• Type III barricades: FDM 240.2.2.9 sets 2 per 12-ft lane closed (1 for lanes under 12 ft) at a 6'-0" minimum unit width [102-600 sht 9/10 Channelizing Device Note 2]. Deliberately NOT encoded as a device — FDM 240.2.2.9 scopes that count to closing or partially closing a ROAD OR RAMP, not to the…
• Temporary raised rumble strips are priced on ta-10 at >=55 mph (2 sets + 2 TTC-010-25, Idx 102-603 sht 1 Note 4). The >60-minute condition is not gated (no duration input), so a TA-10 at >=55 mph lasting <=60 min is over-counted by 2 strip sets and 2 signs.
• One-way control: Florida authorises no devices-only / pure-YIELD alternative to TA-10 — every enumerated means in Idx 102-603 sht 1 Note 5 is active control (flagger, flag-carrying vehicle, official vehicle, pilot vehicle, traffic signal; Note 7 adds AFADs), and sole flaggers must be in sight of…
• Flagger station geometry: Idx 102-603 sht 1 puts the work-side flagger 25-50 ft ahead of the approach taper and the opposing flagger 250 ft beyond the downstream taper, not an SSD-derived station. The ta-10 tapers are priced at 100 ft: 5 cones each at 25-ft spacing, 3 drums each at 50-ft spacing…
• Arrow-board omission: Idx 102-613 sht 1 GN 5 lets a single-lane closure drop the arrow board AND the buffer together when it runs 60 minutes or less AND the speed limit is 45 mph or less. It applies to any single-lane closure on 102-613 (multilane), never on double/triple closures or above 45 mph.…
• Traffic pacing is an FL-only requirement this file drops entirely: FDM 240.2.1.7, verbatim, 'Specify traffic pacing restrictions for all multilane roadways with work zone speeds of 50 mph or greater.' Every ta-33 run at 50 mph or above trips it. Like the operational caps below, it is a validator…
• AFAD gating is not modelled: Idx 102-603 sht 1 Note 7 + Spec 102-9.16 / 990 permit AFADs (federal defers) but Florida gates them — two flaggers on-site, either an AFAD at each end or one AFAD + one flagger; a single flagger may run two AFADs only with an unobstructed view of both devices and both…
• Clear-zone widths (Idx 102-600 sht 3 Tbl 5: travel lanes 30/24/18/14/12 ft by speed bucket 60-70 / 55 / 45-50 / 35-40 / <=30, auxiliary lanes and single-lane ramps 18/14/10/10/10, curb-and-gutter 4 ft behind the face of curb) and minimum radii at normal crown (sht 3 Tbl 6, 30 mph -> 430 ft up to…
• Operational caps are validators this estimator does not run: lane closures on interstates and state highways posted 55 mph or above must not exceed 3 miles including taper, buffer and work zone, and must not close two consecutive interchanges [Idx 102-600 sht 3]; a limited-access lane closure…
• TTC-011A-25 SPEEDING FINES DOUBLED WHEN WORKERS PRESENT, G20-2 and W21-5a are priced at --days 2 or more (Idx 102-613 GN 5 / Idx 102-603 Note 6 allow omission at 24 h or less): ta-33 (TTC-011A-25 x2, G20-2 x2, W21-5a x2 off limited access), ta-10 (TTC-011A-25 x2, G20-2 x2), ta-30 (TTC-011A-25 x2,…
• Dual sign codes: Florida is mid-transition between the MOT-NN-YY artwork (700-102 FY25-26) and the TTC-NNN-25 codes (102-Series FY26-27) for the same physical panels, and W20-1F is FDOT's cell-library name for MUTCD W20-1. This file emits federal MUTCD codes plus the FL-only panels TTC-011A-25 and…
• TA-33 and TA-30R shoulder taper is required unless the paved shoulder is <4 ft (Idx 102-613 GN 4); it is priced when --shoulder-width (or the 8-ft default) is 4 ft or more. Idx 102-613 sht 1 draws a 100-ft shoulder tangent between the L/3 shoulder taper and L; it is priced under the same 4-ft…

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: Std 9106 note ** ('BUFFER ZONES OF 300' MINIMUM, 500' DESIRABLE ARE REQUIRED FOR TANGENT SECTIONS') and plan dimension '300' MIN BUFFER ZONE'; SP150 Rev 8/22/2025 §150.3.05.C.3
• sign_spacing: Std 9106 sign spacing row 'rural'; georgia override (C 500->4280) per Std 9106 plan dimensions at every speed (Typical Dimensions table 25-65 mph): A = 500 (W4-2), B = 500 (W20-5 LANE CLOSED 1000 FT), C = 5280 - 1000 = 4280 to W20-1 ROAD WORK 1 MILE
• taper_spacing: Taper: max drum spacing in tapers = the posted speed in feet (SP150 Table 150-1 right column, PDF p.37), the federal 1xS rule of MUTCD 6K.01 para 04. The departure taper takes the taper column: GDOT publishes no separate downstream column. Tangent: SP150 §150.3.05.C.3 (PDF p.38) and Std 9102/9107 cap activity-area spacing at 80 ft; the MUTCD 6K.01 2xS Guidance is applied as the conservative…
• tangent_spacing: Taper: max drum spacing in tapers = the posted speed in feet (SP150 Table 150-1 right column, PDF p.37), the federal 1xS rule of MUTCD 6K.01 para 04. The departure taper takes the taper column: GDOT publishes no separate downstream column. Tangent: SP150 §150.3.05.C.3 (PDF p.38) and Std 9102/9107 cap activity-area spacing at 80 ft; the MUTCD 6K.01 2xS Guidance is applied as the conservative…
• departure_spacing: Taper: max drum spacing in tapers = the posted speed in feet (SP150 Table 150-1 right column, PDF p.37), the federal 1xS rule of MUTCD 6K.01 para 04. The departure taper takes the taper column: GDOT publishes no separate downstream column. Tangent: SP150 §150.3.05.C.3 (PDF p.38) and Std 9102/9107 cap activity-area spacing at 80 ft; the MUTCD 6K.01 2xS Guidance is applied as the conservative…
• buffer_tangent_spacing: Taper: max drum spacing in tapers = the posted speed in feet (SP150 Table 150-1 right column, PDF p.37), the federal 1xS rule of MUTCD 6K.01 para 04. The departure taper takes the taper column: GDOT publishes no separate downstream column. Tangent: SP150 §150.3.05.C.3 (PDF p.38) and Std 9102/9107 cap activity-area spacing at 80 ft; the MUTCD 6K.01 2xS Guidance is applied as the conservative…

ta-10, ta-30, ta-30r, ta-33

• Mandatory work-zone speed reduction (SP150 §150.3.04.B.2, PDF p.30) is not applied: the engine prices the speed it is given. Five triggers, any one of which fires it on limited-access / controlled-access multi-lane divided roads — (a) a lane closure of any type or duration, (b) an elevation…
• The signing that comes with the mandatory speed reduction is not emitted: a 'Reduced Speed Ahead' sign 600 ft prior, R2-1 double-indicated, repeated at <=1 mile, and an R2-1 1,500 ft from the end of every interstate entrance taper. On a 65 or 70 mph divided job that is at least 4 extra panels the…
• Tiered longitudinal drum spacing (40 / 80 / 200 ft by worker and hazard exposure, SP150 §150.2.04.B.3, PDF p.14). Only the 80-ft activity-area cap is encoded. The 40-ft tier (elevation difference over 2 in, or healed sections <=4:1) roughly doubles tangent devices and the estimator takes no…
• Type C arrow board is mandatory in Georgia (48 in H x 96 in W, >=15 lamps, 1-mile legibility; SP150 §150.2.03, PDF p.13), Types A and B only as an emergency stand-in until a Type C arrives, mounted >=7 ft to the bottom with automatic night dimming. The engine emits a generic ARROW_BOARD line with…
• HWZ-1 / HWZ-2 / HWZ-3 increased-penalty panels (O.C.G.A. §40-6-188 via SP150 §150.3.04.B, PDF p.29-33). Every construction or reconstruction segment is signed as a Highway Work Zone except non-state two-lane two-way resurfacing: HWZ-2 at the start, 600-1000 ft in advance (750 ft recommended),…
• ASTM D4956 Type XI sheeting is required on all orange construction warning signs regardless of mounting height, and Type IV/VI on channelizers (SP150 §150.2.02.A, PDF p.13). Federal 6F.01 para 11 / 2A.21 permit several sheeting types. This is a unit-cost deviation and the BOM carries no sheeting…
• SP150 §150.3.04.A project W20-1 series (1500/1000/500 ft; +2 MI/1 MI/1/2 MI on divided) is project-termini signing, additive to and non-overlapping with the Std 9102/9106/9107 lane-closure signs (9106/9107 General Note 6; §150.3.04.A.1, §150.3.05.C.1). Priced once per project, not per closure, so…
• The class-keyed downstream-taper floor (SP150 §150.3.05.C.4, PDF p.38): ta-33 200 ft (Std 9106 single-lane figure draws 100' min; SP150 governs), ta-30r and ta-30 150 ft (Std 9107; ta-30 via added departure segments). ta-25 has no departure-taper segment and carries none. TA-10 uses the Std 9102…
• Operational caps: lane and shoulder closures may not exceed 2 miles excluding tapers without Engineer approval, and successive closures must be at least 1 mile apart (SP150 §150.3.05.A.1, PDF p.35-36). These are validators, not quantities — the estimator will happily price a 3-mile zone GDOT would…
• Multiple successive lane closures: one lane at a time per merging taper, with a minimum tangent of 2L of drums between individual closure tapers (SP150 §150.3.05.C.2, PDF p.37). Out of product scope (single-lane closures only), so it is never reached.
• Flagger regime: certification by NSC or ATSSA with 'On-line classes are not accepted', stop/slow paddle per 6D.02 on a shaft of at least 7 ft, retroreflectorized day and night, optional >=24 in square red flag, Class 2 apparel by day and Class 3 at night, night flagger stations illuminated, and an…
• AFADs and portable temporary traffic signals are conditional-authorize in Georgia: written request, an alternate TTC plan using certified flaggers for device failure, and Engineer approval (SP150 §150.3.07.F-G, PDF p.39-40). The engine cannot substitute either for a flagger.
• Mobile-operations protection vehicles need a TMA 'certified for impacts not less than sixty-two (62) mph' to MASH / NCHRP-350 TL-3, with a mobile operation defined by a 3 mph minimum travel speed (SP150 §150.3.09, PDF p.40). Portable attenuators must be rated at or above the speed limit, TL-3 at…
• Ramp work: EXIT OPEN signing per Figure 6P-42 (TA-42) with exit-ramp drums tightened to 10 ft for 200 ft before and 100 ft into the temporary gore (SP150 §150.3.05.E, PDF p.38). No ramp geometry input exists.
• Significant-project trigger: an Interstate project inside a designated Transportation Management Area (5 TMAs in Georgia, urbanized areas over 200,000 population) occupying a location for more than three days with intermittent or continuous lane closures requires a full TMP (WZSM Policy Subpart K,…
• Table 150-1 rounds L up to the next 5 ft; the engine also rounds L/2 and the shoulder taper up to 5 ft, though SP150 publishes those as formulas with no rounding rule. Maximum error is +5 ft and it never changes a device count at Georgia's spacings.
• Shoulder-closure signing: W21-5a placed 500 ft prior and repeated after 2 miles (SP150 p.36), and barrier-closed shoulders taper per Std 4960 at 10:1 or flatter. Shoulder closures are out of product scope and no panel is emitted.
• Unless specified elsewhere in the Contract, ALL construction signs use the MUTCD Table 6G-1 Freeway/Expressway size column on every road class (SP150 Rev 8/22/2025 §150.2.07.A.1); signs wider than 48 in go on two posts (§150.2.07.B). The BOM carries no panel-size field, so every Georgia sign line…
• Interim sign posts (SP150 §150.2.07, PDF p.16): square tubular per T-3A, mounted 7-8 ft to the bottom, and signs LARGER THAN 48 IN REQUIRE TWO POSTS; plywood blanks and flexible sign substrates are not permitted except for non-contract utility work. Combined with the Table 6G-1 size rule this is a…
• GA-only personnel line: a Law Enforcement Officer is REQUIRED at functioning signalized intersections whenever a lane closure or shift blocks movements (SP150 §150.3.08.B, PDF p.40, per O.C.G.A. §40-6-20). Federal Part 6 does not codify this. The engine emits a flagger count only and has no LEO…
• Reduced-speed signing is not priced. Georgia's reduction is mandatory at 65/70 mph, but SP150's quantities are not derivable from a TA code and a speed: 'repeat at <=1 mile' scales with zone length and the 1,500-ft R2-1 past each interstate entrance taper scales with ramp count, which is not an…
• Flat Standard buffers are applied per TA (9106 300 ft, 9107 50 ft, 9102 200 ft) and the 9106 150-ft termination buffer is a segment. Not modelled: the 500-ft (9106) and 300-ft (9102) desirable buffers and the curve increase (SP150 §150.3.05.C.3-4).
• TA-10 device class: SP150 §150.2.04.D.2 allows 28-in cones by day at flagging stations (none at night, none on interstates). TA-10 prices 28-in cones by default and drums with --night, per the Std 9102 legend; the engine has no interstate input, so an interstate TA-10 run prices cones Georgia…
• Unverifiable: departure-taper device spacing. GDOT prints none - the Std 9106/9107 downstream tapers carry no spacing dimension and SP150 §150.3.05.C.4 gives length only - so device_spacing.departure stays at S (the Table 150-1 taper column).
• Unverifiable: speed-to-road-type mapping. GDOT keys its lane-closure details on facility (two-lane 9102 / undivided 9107 / divided 9106), not on a speed band (SP150 §150.3.04.A.2; Std 9102/9106/9107). The 0-30 / 35-45 / 50-55 / 60-80 mph bands stay; TA-10, TA-30 and TA-30R map 60-80 mph to the…
• Std 9102/9106/9107 print sign faces with distance legends (ROAD WORK 1 MILE, LANE CLOSED 1000 FT, ROAD WORK 1500 FT, 500 FEET plate); TA-33, TA-30, TA-30R and TA-10 print those faces. Other TAs keep the federal template faces.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD Table 6B-3 'at least 0.33 L'; out of scope in Gilbert (gilbert.js TAPER_TYPES :579-613)
• buffer: 0 ft both ends, inherited from arizona.js BUFFER_POLICY (gilbert.js BUFFER_POLICY :679-703); the adopted MUTCD makes the buffer an Option
• sign_spacing: MUTCD Table 6B-1 row 'rural'
• taper_spacing: Gilbert ES §4.21: 1 x S in tapers (a maximum); no tangent value, MUTCD §6K.01 2 x S (gilbert.js DEVICE_SPACING). No ADOT 40/80 cap. Departure taper at ~20 ft per MUTCD 6B.08 ¶14 (speed-independent; within Gilbert ES §4.21 1 x S as a maximum), the same basis as the TA-10 tapers.
• tangent_spacing: Gilbert ES §4.21: 1 x S in tapers (a maximum); no tangent value, MUTCD §6K.01 2 x S (gilbert.js DEVICE_SPACING). No ADOT 40/80 cap. Departure taper at ~20 ft per MUTCD 6B.08 ¶14 (speed-independent; within Gilbert ES §4.21 1 x S as a maximum), the same basis as the TA-10 tapers.
• departure_spacing: Gilbert ES §4.21: 1 x S in tapers (a maximum); no tangent value, MUTCD §6K.01 2 x S (gilbert.js DEVICE_SPACING). No ADOT 40/80 cap. Departure taper at ~20 ft per MUTCD 6B.08 ¶14 (speed-independent; within Gilbert ES §4.21 1 x S as a maximum), the same basis as the TA-10 tapers.
• buffer_tangent_spacing: Gilbert ES §4.21: 1 x S in tapers (a maximum); no tangent value, MUTCD §6K.01 2 x S (gilbert.js DEVICE_SPACING). No ADOT 40/80 cap. Departure taper at ~20 ft per MUTCD 6B.08 ¶14 (speed-independent; within Gilbert ES §4.21 1 x S as a maximum), the same basis as the TA-10 tapers.

ta-10, ta-30, ta-30r, ta-33

• Arrow boards required on all arterial lane closures (§10-5(d)(2)a); arterial is not an input, and the template already carries them on TA-30/30R/33.
• Law enforcement at signalized intersections (GIL-S1-9) and per Technical Manual No. 1 (unretrievable): no device type or input.
• R4-7 / R4-8 KEEP RIGHT / LEFT on TA-10 approaches: statewide position, no asset.
• Freeway: a freeway through Gilbert is ADOT right-of-way, outside Gilbert's sources; --road-type freeway here prints federal 1000/1500/2640 spacing and a 0 ft buffer. Run --jurisdiction arizona.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: Inferred: 1/3 x HDOT Table 645-I T (W = 12 ft or less) per MUTCD 11th Ed Table 6B-3; §645 (HDOT Std Spec §645 special provision 12-24-2025) prints no shoulder taper. 233 ft at 55, 200 at 50, 183 at 45, 117 at 40, 83 at 30-35, 67 at 20-25. Above 55 mph the federal shoulder-width formula applies. Open (HDOT to confirm): the Table 645-I footnote 'W = width of lane or shoulder' may be read as full T…
• buffer: HDOT §645 Table 645-I, Longitudinal Buffer Space (B) (Contract requirement: HDOT Std Spec §645 special provision 12-24-2025 645.03(F), Table 645-I 'For Traffic Control Plan')
• sign_spacing: HDOT §645 SP 12-24-2025 Table 645-I sign spacing D: 250 ft (20-35 mph), 500 ft (40-45), 1,000 ft (50-55). One distance, no road-type split. row 'HDOT §645 Table 645-I sign spacing D, 46-55 mph'
• taper_spacing: Table 645-I 'Spacing of Cones or Tubular Markers' (HDOT Std Spec §645 special provision 12-24-2025): TAPER = S (20-55 ft), TANGENT = S, and WORK AREA = 10 ft. No departure/downstream column is printed, so the departure taper uses the taper spacing S. Above 55 mph the federal 6K.01 spacing applies (taper S, tangent 2S).
• tangent_spacing: Table 645-I 'Spacing of Cones or Tubular Markers' (HDOT Std Spec §645 special provision 12-24-2025): TAPER = S (20-55 ft), TANGENT = S, and WORK AREA = 10 ft. No departure/downstream column is printed, so the departure taper uses the taper spacing S. Above 55 mph the federal 6K.01 spacing applies (taper S, tangent 2S).
• departure_spacing: Table 645-I 'Spacing of Cones or Tubular Markers' (HDOT Std Spec §645 special provision 12-24-2025): TAPER = S (20-55 ft), TANGENT = S, and WORK AREA = 10 ft. No departure/downstream column is printed, so the departure taper uses the taper spacing S. Above 55 mph the federal 6K.01 spacing applies (taper S, tangent 2S). (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: Table 645-I 'Spacing of Cones or Tubular Markers' (HDOT Std Spec §645 special provision 12-24-2025): TAPER = S (20-55 ft), TANGENT = S, and WORK AREA = 10 ft. No departure/downstream column is printed, so the departure taper uses the taper spacing S. Above 55 mph the federal 6K.01 spacing applies (taper S, tangent 2S).

ta-10, ta-30, ta-30r, ta-33

• Table 645-I 'W = greater than 12 ft' taper column: W x 17 (20, 25 mph), W x 20 (30, 35), W x 30 (40), W x 45 (45), W x 50 (50), W x 55 (55); footnote 'W = width of lane or shoulder' (HDOT Std Spec §645 special provision 12-24-2025, Table 645-I; render p.645-7). Encoded for whole-foot widths of…
• Table 645-I covers 20-55 mph only. Above 55 mph every numeric driver in a Hawaii estimate is federal (MUTCD 11th Ed, adopted as-is) and the 10-ft work area gives way to the federal tangent-spaced work zone.
• Two police officers per location (HDOT Std Spec §645 special provision 12-24-2025 645.01(A), 645.03) are priced as personnel on TA-10, TA-30, TA-30R and TA-33 (TA-10 = 2 flaggers + 2 officers). Other TAs carry none; a TCP calling for more officers is not modelled.
• TA-10 1,000-ft cap (HDOT Std Spec §645 special provision 12-24-2025 645.03): the engine has no zone-length cap. A longer TA-10 prices normally; ta-10 warn says so.
• Lane-closure limits (HDOT Std Spec §645 special provision 12-24-2025 645.03(F)): only one lane closed at a time during lane-closure hours. Lane closures 8:30 a.m.-3:00 p.m. Mon-Fri; other hours need the Engineer's written acceptance (645.03(H) contemplates night work under that exception). Oahu…
• The current §645 (HDOT Std Spec §645 special provision 12-24-2025) has no TA figures; the 2005 base Section 645 had seven (Figures 1-7, R11/97), superseded. Project-level signs (645.03(B) construction signs at project begin/end, 645.03(G) two 8x4 ft advisory signs posted 2 weeks ahead) are not…
• At 56-59 mph the federal overlay, which carries every driver above 55 mph, has no road-type band; the engine uses the rural row (500 ft sign spacing). Posted limits run in 5-mph steps, so only an entered 85th-percentile speed reaches it. 60 mph and above resolve to the federal freeway row.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MUTCD Table 6B-2 (Option, MUTCD 6B.06 para 11)
• sign_spacing: MUTCD Table 6B-1 row 'rural'
• taper_spacing: Federal §6K.01 para 04: 1.0*S in taper, 2.0*S on tangent. Idaho's only spacing change (N = 50, TM 2026 §6N.14) covers two-way traffic on one roadway of a divided highway, which this estimator does not model. No departure column published; engine uses taper spacing.
• tangent_spacing: Federal §6K.01 para 04: 1.0*S in taper, 2.0*S on tangent. Idaho's only spacing change (N = 50, TM 2026 §6N.14) covers two-way traffic on one roadway of a divided highway, which this estimator does not model. No departure column published; engine uses taper spacing.
• departure_spacing: Federal §6K.01 para 04: 1.0*S in taper, 2.0*S on tangent. Idaho's only spacing change (N = 50, TM 2026 §6N.14) covers two-way traffic on one roadway of a divided highway, which this estimator does not model. No departure column published; engine uses taper spacing. (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: Federal §6K.01 para 04: 1.0*S in taper, 2.0*S on tangent. Idaho's only spacing change (N = 50, TM 2026 §6N.14) covers two-way traffic on one roadway of a divided highway, which this estimator does not model. No departure column published; engine uses taper spacing.

ta-10, ta-30, ta-30r, ta-5

• Higher fines: IDAPA 39.03.41.004.53 (replacing MUTCD §6G.08): R2-6P SHALL be used where increased fines are imposed; R2-11 SHOULD (Guidance) mark the downstream end. IDAPA .004.51 deletes R2-6aP, R2-10, R2-12 from Fig 6G-1; TM July 2026 §6G.08 bars R2-1001. No TA template emits any of these codes.
• Median-crossover default: TM July 2026 §6N.15 and WZSM 2026 Ch.5 §III.A make median crossovers the ITD default on divided-highway projects 'if traffic volumes allow', unless a Chief-Engineer waiver is issued. An Idaho divided-highway project defaults to a median crossover (TA-39-style two-way…
• Idaho device specs: Type 3 barricade = 7 ft (84 in) wide (TM July 2026 §6K.07; Std Spec 626.02.B), tubular markers >=36 in tall and >=3 in wide (TM 2026 §6K.04; Std Spec 626.02.B), drums (TM 2026 §6K.06). The estimator prices one flat device class per job, so a run Idaho expects to be tubular…
• Sign sizes: TM July 2026 §6H.01 makes 48x48 the Idaho default warning sign; §6F.01 allows enlarging G20-1 to 60x24 and G20-2 to 48x24 'for conventional roads'; §6H.35 allows G20-1 at 60x30. Sign rows here carry a MUTCD code and a quantity but no panel size, so every Idaho sign is implicitly priced…
• TM July 2026 §6N.14 two-way traffic on one roadway of a divided highway: Idaho substitutes N = 50 into the channelizing-device / RPM spacing equations (citing §6K.01 and §6J.03), drawn on Figs 6N-1 to 6N-3 (3 sheets) with Fig 6P-39. Figure 6N-1 (revised 2026; 6N-2/6N-3 add crossover channelization…
• Temporary pavement markings: TM July 2026 §6J.02 REQUIRES temporary edge lines and channelizing lines on Interstates and Expressways (optional elsewhere unless shown on plans), plus lane-reduction-transition and gore markings when they are used. Striping is not a BOM line item, so a freeway Idaho…
• Flagger and TCS certification: TM July 2026 §6D.01 and the ITD memo of Jan 31 2024 require current IN-PERSON certification (ATSSA / Evergreen Safety Council / National Safety Council), flagger reciprocity with WA/OR/MT/UT; TRAFFIC CONTROL SUPERVISOR reciprocity with MT/OR only, and do not…
• Pilot car: TM July 2026 §6H.37 adds WAIT FOR PILOT CAR (G20-401, 30x30 or 36x36) on low-volume intersecting roads while a pilot car operates, alongside PILOT CAR FOLLOW ME (G20-4). There is no pilot-car TA template, so choosing that control method instead of TA-10's two flaggers emits no signs at…
• Spring-breakup speed-restriction markers (TM July 2026 §6G.06; IDAPA 39.03.14; IC 49-1005): 6x18 in markers below R2-1, red = trucks/buses >=10,000 lb GVW restricted to 30 mph, green = restriction waived by the District Engineer (yellow deleted in 2026). Seasonal, Idaho-original, and emitted by…
• Positive protection: ITD WZSM 2026 Ch.5 §II.A requires Positive Protection Devices (precast concrete or steel barrier, mobile barrier trailer, or shadow vehicle with TMA) in work zones with operating speeds of 45 mph or greater AND where workers have no means of escape; an engineering study is…
• Significant projects: Interstate projects inside a TMA occupying a location for three or more consecutive days with intermittent or continuous lane closures are Significant Projects requiring a full TMP; Boise/Nampa (Ada + Canyon) is the only Idaho TMA (WZSM 2026 Ch.1 §III). Scope and…
• AFAD: TM July 2026 §6L.02 permits AFADs where engineering judgment finds the AFAD improves TTC-zone safety or reduces project cost (considerations A-I). The estimator has no AFAD path -- a TA-10 job is always costed as two flaggers, never as AFADs, and the Idaho engineering-judgment gate is not…
• W8-703 AVOID WINDSHIELD DAMAGE (TM July 2026 §6H.38): an Idaho-original Part 6 warning sign for seal-coat projects, posted with a W13-1P advisory-speed plaque below. No TA template emits it, so an Idaho seal-coat job under-reports by that sign plus its plaque.
• DO NOT PASS / NO PASSING ZONE (TM July 2026 §6J.02): Idaho directs engineering judgment on R4-1 / R4-2 / R14-3 for low-volume roads on situations lasting more than 14 days. Duration is an input here (--days) but no sign row is keyed to it, so a >14-day Idaho job emits none of those three panels.
• TTC pay basis (ITD 2023 Std Spec §626.04/.05 + 2025/2026 Supplementals): Idaho pays TTC by UNIT, not lump sum. Signs by SF; drums, barricades, tubular markers, vertical panels and cones (cones added by the 2025 Supplementals and carried in the 2026 Supplementals) per Each; arrow boards and PCMS by…
• TM July 2026 §6L.100 Residential Driveway Temporary Signal (FHWA Interim Approval, optional): for residential driveways within a one-lane two-way zone controlled by a temporary traffic signal. It carries an R10-11b + TURN ONLY IN DIRECTION OF ARROW plaque. No signal-controlled TA-12 path emits it.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: IDOT 700-series drawn buffer (drawn dimension on Highway Standard)
• sign_spacing: MUTCD Table 6B-1 row 'rural'; illinois override (A 500->1500, B 500->1100, C 500->2600) per Std 701421-08 / 701422-10 (Rev #229 pp.309-310): W4-2 1500 ft to the taper, W20-5 1/2 MILE 1100 ft before it, W20-1 1 MILE 2600 ft before that
• taper_spacing: Taper: 20 ft on 701201-05 note 1, 701206-05 note 1, 701501-06 note 4, 701601-09 note 6; direction indicator barricades at 50 ft (15 m) centers at >=45 mph on 701401-13, 701406-13, 701421-08, 701422-10. Tangent: 100 ft centers at >=45 mph on 701401-13 and 701422-10 ('Type II barricades, drums, or vertical barricades at 100' centers') and in the 701406-13 work area. Below 45 mph, 701501-06 note 3…
• tangent_spacing: Taper: 20 ft on 701201-05 note 1, 701206-05 note 1, 701501-06 note 4, 701601-09 note 6; direction indicator barricades at 50 ft (15 m) centers at >=45 mph on 701401-13, 701406-13, 701421-08, 701422-10. Tangent: 100 ft centers at >=45 mph on 701401-13 and 701422-10 ('Type II barricades, drums, or vertical barricades at 100' centers') and in the 701406-13 work area. Below 45 mph, 701501-06 note 3…
• departure_spacing: Taper: 20 ft on 701201-05 note 1, 701206-05 note 1, 701501-06 note 4, 701601-09 note 6; direction indicator barricades at 50 ft (15 m) centers at >=45 mph on 701401-13, 701406-13, 701421-08, 701422-10. Tangent: 100 ft centers at >=45 mph on 701401-13 and 701422-10 ('Type II barricades, drums, or vertical barricades at 100' centers') and in the 701406-13 work area. Below 45 mph, 701501-06 note 3…
• buffer_tangent_spacing: Taper: 20 ft on 701201-05 note 1, 701206-05 note 1, 701501-06 note 4, 701601-09 note 6; direction indicator barricades at 50 ft (15 m) centers at >=45 mph on 701401-13, 701406-13, 701421-08, 701422-10. Tangent: 100 ft centers at >=45 mph on 701401-13 and 701422-10 ('Type II barricades, drums, or vertical barricades at 100' centers') and in the 701406-13 work area. Below 45 mph, 701501-06 note 3…

• drum when {"min_speed": 45, "min_hours": 24}
• drum when {"min_speed": 45, "night": true}
• cone_28in when {"min_speed": 45}
• cone_28in when {"night": true}

ta-10, ta-30, ta-30r, ta-33

• 'RIGHT LANE CLOSED / x MILES AHEAD' signs are mandatory on a freeway or expressway when TWO lanes are closed (Std 701400). The estimator's scope is single lane closures, so the trigger never fires and the signs are never emitted.
• 45-55 MPH MULTILANE SIGN TRAIN ON TA-30. Std 701421-08 / 701422-10 (Rev #229) use W4-2 1500 ft to the taper, W20-5 1/2 MILE 1100 ft before it and W20-1 1 MILE 2600 ft before that. TA-30R carries this ladder; TA-30 prints the 350/500 ft ladder. Placement only, no count moves.
• TA-30 (interior lane closures) uses the federal Fig 6P-30 component list. Std 701421-08 / 701422-10 draw right-lane closures, so their additions (W20-7, speed-limit assembly, G20-I103, second arrow board, flashing barricades) are applied to TA-30R and to TA-33 off freeway, at 45-55 mph only. TA-30…
• CONE BANDING. Std 701901-11 sht 1 (Rev #229 p.333) permits only banded 28 in.+ cones at night. The class sets the 28 in. minimum at night and at >=45 mph; banding is not a line item.
• PERMISSIVE DOUBLING. Std 701201-05 note 2 closes with 'When drums or barricades are used, these intervals between devices may be doubled'. 'May' is permissive, so the denser count is kept.
• MULTI-AREA RULE. Std 701201: where the distance between work areas exceeds 2000 ft (600 m), additional warning signs, flaggers and a taper are required. The estimator takes a single contiguous zone length, so a split work area is under-counted.
• DAY-OPERATION SCOPE. Std 701201-05, 701406-13 and 701421-08 are day-operation sheets; 701206-05, 701401-13 and 701422-10 cover night or multi-day work. Pass --night or --days 2+ to select the 701401/701422 drum rule at >=45 mph; without either, the day-sheet values apply.
• POSITIVE PROTECTION / TEMPORARY CONCRETE BARRIER. No IDOT source on disk covers TCB anchoring, drop-off treatment or crashworthiness. No barrier quantity is emitted.
• ROAD CONSTRUCTION NEXT X MILES. Std 701901 requires this advance guide sign, placed 500 ft (150 m) in advance of the project limits, on every project 2 miles or longer, plus END CONSTRUCTION G20-I105 at the end of the job; both dual-sided on multilane highways (701901-11 sht 2). The estimator…
• ROAD-TYPE KEYING, unverifiable. IDOT keys its sheets by facility and speed (freeway/expressway 701400-701406 at any speed; multilane 45-55 701421/701422; 2L2W >=45 701201/701206; urban 701501/701601) and publishes no speed-to-Table-6B-1-row mapping (Rev #229 index p.285ff). The four speed bands…
• DOWNSTREAM TAPER LENGTH, unverifiable. No IL lane-closure sheet draws a downstream taper (Rev #229 pp.290-322), so downstream_taper_ft stays at the federal 100 ft. It only drives the optional TA-33 / TA-30R departure taper.
• SHOULDER WIDTH DEFAULT, unverifiable. No IDOT source sets a default shoulder width for TTC estimating (Rev #229 700-series); shoulder_width_ft stays 8. The shoulder taper is optional, so no required count moves.
• 45-MPH SIGN TRAIN. Std 701201 draws the 2L2W advance train at 500 ft spacings and is scoped to >=45 mph. The Keryk speed bands put 45 mph in urban-high, which the 701501 table also sets at 350 ft. A 45-mph two-lane TA-10 prints 350 where 701201 draws 500. No sign count moves.
• WORK-ZONE SPEED AS AN INPUT. Illinois day operations commonly drop the work-zone limit to 45 mph (Std 701421 title band). The estimator has no reduced-speed input, so taper, buffer, device spacing and the road-type band all run off the posted speed passed in.
• ROAD CONSTRUCTION AHEAD vs ROAD WORK AHEAD. Under Rev #229 contract projects post W20-I103 ROAD CONSTRUCTION AHEAD where the template prints W20-1; maintenance and utility jobs post W20-1. Rev #230 (eff. 1/1/2027) makes W20-1 universal. The template W20-1 face is kept.
• TA-11 has no Illinois sheet. Flagging is the IDOT default for 2L2W work. The federal figure is used.
• 50 MPH SIGN SPACING. The 701501/701601 urban table sets 350 ft at 50-45 mph; 701201 (2L2W >=45) draws 500. The engine cannot tell urban from rural at 50 mph, so it keeps the federal rural 500. Placement only.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: IDM 503-3.04(03)(1), 'Shoulder closure tapers ... should be calculated as 1/3 L'; every TCLC freeway sheet draws 1/3 of the 12-ft-lane L. On a freeway (840-ft L, E 801-TCDV-03 Note 1) it is 280 ft. Not keyed to the shoulder width.
• buffer: MUTCD Table 6B-2 (REQUIRED on interstate and freeway lane closures by INDOT Standards; 'should be provided whenever practical' on all other highways (IDM 503-3.04(03)(3), which cites the table as 'Table 6C-2'))
• sign_spacing: MUTCD Table 6B-1 row 'rural'
• taper_spacing: Taper: 'spacing of channelizing devices on tapers shall be numerically equal in feet to the posted speed limit in mph' [E 801-TCLG-01 Note 4; E 801-TCLC-01 GN 4]. Tangent: cones at ≤ 40 mph 'Spacing in tangent shall be 40 ft maximum' [E 801-TCDV-04 Note 1, Standard, Sept 2022]; 50 ft at 45 mph and 100 ft at ≥ 50 mph [E 801-TCDV-04 Note 3; E 801-TCLC-01 GN 3; E 801-TCLG-01 Notes 2-3; E…
• tangent_spacing: Taper: 'spacing of channelizing devices on tapers shall be numerically equal in feet to the posted speed limit in mph' [E 801-TCLG-01 Note 4; E 801-TCLC-01 GN 4]. Tangent: cones at ≤ 40 mph 'Spacing in tangent shall be 40 ft maximum' [E 801-TCDV-04 Note 1, Standard, Sept 2022]; 50 ft at 45 mph and 100 ft at ≥ 50 mph [E 801-TCDV-04 Note 3; E 801-TCLC-01 GN 3; E 801-TCLG-01 Notes 2-3; E…
• departure_spacing: Taper: 'spacing of channelizing devices on tapers shall be numerically equal in feet to the posted speed limit in mph' [E 801-TCLG-01 Note 4; E 801-TCLC-01 GN 4]. Tangent: cones at ≤ 40 mph 'Spacing in tangent shall be 40 ft maximum' [E 801-TCDV-04 Note 1, Standard, Sept 2022]; 50 ft at 45 mph and 100 ft at ≥ 50 mph [E 801-TCDV-04 Note 3; E 801-TCLC-01 GN 3; E 801-TCLG-01 Notes 2-3; E…
• buffer_tangent_spacing: Taper: 'spacing of channelizing devices on tapers shall be numerically equal in feet to the posted speed limit in mph' [E 801-TCLG-01 Note 4; E 801-TCLC-01 GN 4]. Tangent: cones at ≤ 40 mph 'Spacing in tangent shall be 40 ft maximum' [E 801-TCDV-04 Note 1, Standard, Sept 2022]; 50 ft at 45 mph and 100 ft at ≥ 50 mph [E 801-TCDV-04 Note 3; E 801-TCLC-01 GN 3; E 801-TCLG-01 Notes 2-3; E…

• drum when {"road_types": ["freeway"]}
• drum when {"night": true, "min_speed": 45}
• drum when {"gt_hours": 72}

ta-10, ta-30, ta-30r, ta-33

• Freeway merge taper: E 801-TCDV-03 Note 1 (Standard) sets 840 ft for the first merge taper on freeways, independent of posted speed. Applied as merging_taper.flat on road_type freeway. The engine has no facility-class input, so it fires only with --road-type freeway or in the 60+ mph speed band. A…
• Freeway shift taper: IDM 503-3.04(03)(1) says a full 12-ft interstate/freeway shift 'should be 420 ft' (Guidance). The engine derives it as L/2 of the freeway 840-ft flat taper, so it holds only when the road type resolves to freeway. Shift tapers drive only ta-15/24/25/26; no TA-33/30/30R/10…
• Shoulder taper: 1/3 of the 12-ft-lane L, rounded up to 5 ft. On a freeway that is 840/3 = 280 ft. Not keyed to shoulder width, which matches the TCLC sheets.
• TMA crash-test level, and the contradiction Indiana has not resolved: Std Spec §801.10.1 (contract-controlling) gives TL-3 on any interstate OR any construction-zone speed > 45 mph, while IDM 503-3.05(03)7.a gives TL-3 on any interstate OR posted ≥ 50 mph. The two diverge on the 46-49 mph…
• TMA count: 1 per closed lane, mandatory for shadow vehicles in interstate/freeway/divided-highway lanes or shoulders DURING MOBILE OPERATIONS [IDM 503-3.05(03) item 5]. UNVERIFIED for stationary closures: E 801-TCLC-02 and -03 (Sep 2026) draw a shadow vehicle with TMA, arrow board and strobes in…
• Arrow board: federal Fig 6P-30 draws one arrow board per direction, solid; its notes make only positive protection (Note 2) and the TMA (Note 3) optional. The TA-30 arrow boards are priced as required. Indiana makes the arrow board mandatory on freeway lane closures (1 per closed lane). Placement…
• Staggered multi-lane shift on interstates and freeways: temporary middle lane line offset 40 ft from each temporary edge line for 12-ft lanes, 80 ft for a 12→11 ft reduction, successive shifts separated by 2L where a merge follows [IDM 503-3.04(03)(2); E 801-TCLC-04 Notes 5-6]. Multi-lane shifts…
• Operational cap: a daytime two-lane closure may not exceed 1 mile or a half-day's operation, whichever is less [Std Spec §801.16]. The estimator accepts any --zone-length and will silently price a non-compliant 2-mile Indiana daytime closure.
• Temporary stoppage: 20 minutes maximum per stoppage; on a non-divided highway each closed direction needs 1 flagger at the work plus at least 1 additional warning flagger (multi-lane divided: 2 + 2), with 3 working days' written notice to the Department and the Indiana State Police [E 801-TCFO-06…
• Interstate advance signs: 3 MI, 2 MI and 1-1/2 MI ROAD WORK (W20-1 legend family) shall precede ROAD WORK AHEAD on interstate lane closures [E 801-TCLC-01 GN 6, Sep 2026], both shoulders. Carried as option in_interstate_mile_signs (+6 signs), OFF by default: the engine has no interstate-vs-freeway…
• Worksite Speed Limit: statutorily at least 10 mph below the original posted limit, settable by INDOT without an Official Action, in three tracks (Work Zone R2-1; Intermittent-Use R2-1-B + XG20-5-B plaque + S4-4 WHEN FLASHING + amber strobes; Continuous-Use R2-1-B + plaque, no strobes), with…
• AADT gates: above 10,000 AADT a two-lane lane closure 'may not be suitable' and INDOT steers to a full closure, detour or median crossover; significant-project TMP gates sit at 12,000 (2-lane) / 30,000 (multilane) [IDM 503-2.05(01)#3; 503-2.02(01)2.b]. AADT is not an estimator input, so an Indiana…
• Positive control: flagger, portable temporary traffic signal or AFAD is MANDATORY on Indiana one-lane two-way work — a devices-only TA-11 is adopted but not a valid Indiana strategy [IDM 503-2.05(01)#3]. The engine will still price ta-11. Relatedly, the TA-10 template's own 'single flagger may be…
• AFAD: Indiana broadens the federal single-approach-lane condition — 'AFAD use should be considered for any flagging operation regardless of permanent or temporary speed limit' (Jan-2025 IDM revision, DM 25-03) [IDM 503-7.05]. An AFAD substitutes for a flagger rather than adding to the BOM, so the…
• Divided-highway duplication: Indiana DUPLICATES advance signs on both shoulders (E 801-TCLC-02/-03, Sep 2026; every advance leader has two arrows). divided_highway_duplication is set true, so the template's qty 2 rows stand.
• TA-33 long-term freeway sign train: Sep 2026 E 801-TCLC-02 adds XW9-1-B 'LANE ENDS' (replacing the 2025 XW9-2B LANE ENDS MERGE) and XW1-4b, each on both shoulders; E 801-TCLC-03 drops both for short and intermediate duration. Carried as option in_long_term_freeway_signs (4 signs), OFF by default…
• TA-10 portable rumble strips, Indiana-only: required on 50-60 mph flagging operations whenever the flagger stands more than 4 hours, SSD is inadequate, the work is at night, or an AFAD is in use [IDM 503-3.05(06) paragraph 2.a]. Flagger hours, SSD and AFAD use are not estimator inputs, so no…
• Departure taper: required on a long-term (more than 3 days, --days 4+) freeway TA-33 (E 801-TCLC-02 Note 4: 'shall extend 100 ft ... drums spaced 20 ft'; may be omitted for work-vehicle access). E 801-TCLC-03 (short/intermediate) draws none; IDM Fig 503-7D labels it optional.…
• X-prefix sign catalog: INDOT catalogs the construction series as XW20-1, XW20-4, XW20-5(R/L), XW20-7A, XW4-2-A(R/L), XG20-2, dimensionally identical to the federal panels. The Sep 2026 E 801-TCLC set prints ROAD WORK AHEAD and END ROAD WORK (the federal legends); the E 801-TCFO flagging sheets…
• TA-10 sign side and plaque: the both-sides posting at ≥ 50 mph (E 801-TCFO-02; TCFO-04 Note 6) is applied as add_signs duplicates of W20-1, W20-4, W3-4 and W20-7 (18 signs at 55 mph: 16 advance + 2 END). Citation caveat: TCFO-02 is titled 'Multiple Work Areas with Posted Speed ≥ 50 mph'; INDOT has…
• Speed-to-road-type 50-55 rural / 60+ freeway: UNVERIFIED. The TCFO split at 50 mph (TCFO-02 ≥ 50 at 500 ft; TCFO-03 < 50) supports the rural band, but INDOT publishes no speed-to-freeway mapping; facility class decides the freeway treatment. Current bands kept. Supply --road-type for a 60-65 mph…
• TA-30 / TA-30R: UNVERIFIED. No INDOT sheet covers a multilane undivided non-freeway lane closure (E 801-TCLC index, Sep 2026; TCLC-12 three-lane road is not an analog). The federal templates run with Indiana drivers. Count impact unknown.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: TC-402 rev 10 T: 200 ft at 45-60 mph
• buffer: Iowa DOT TC-418/TC-419 dimension E (Standard plan dimension; a RANGE at 45 mph and below.)
• sign_spacing: MUTCD Table 6B-1 row 'rural'; iowa override (A 500->1000, B 500->1000, C 500->2000) per TC-418 A = 1000, A1 = 2000 (W20-1 to W20-5); TC-419 first gap 2A at 55+; 55-70 mph
• taper_spacing: TC-418/TC-419 D halved: Std Spec 2528.03.C.1.b.4 allows 42-in channelizers in place of taper drums for up to 3 days at half the drum spacing (device_spacing.by_class.channelizer_42in)
• tangent_spacing: TC-418/TC-419 D halved: Std Spec 2528.03.C.1.b.4 allows 42-in channelizers in place of taper drums for up to 3 days at half the drum spacing (device_spacing.by_class.channelizer_42in)
• departure_spacing: TC-418/TC-419 D halved: Std Spec 2528.03.C.1.b.4 allows 42-in channelizers in place of taper drums for up to 3 days at half the drum spacing (device_spacing.by_class.channelizer_42in)
• buffer_tangent_spacing: TC-418/TC-419 D halved: Std Spec 2528.03.C.1.b.4 allows 42-in channelizers in place of taper drums for up to 3 days at half the drum spacing (device_spacing.by_class.channelizer_42in)

ta-10, ta-30, ta-30r, ta-33

• TC-214 (pilot-car TA-10 only) doubles dimension A where ADT exceeds 5,000. ADT is not an estimator input.
• TC-214's F (500-2000 ft by speed x ADT), H (maximum closure length by ADT) and T (pilot-car turnaround) are project geometry the estimator does not model.
• TA-10 over 1/4 mile switches to TC-214 pilot car (TC-213 note 2): pilot car, W20-9, rumble strips, C = 160 ft. No zone-length gate in the engine.
• TC-418 note 4 at 60+ mph: R2-1 SPEED LIMIT 55 is priced (2 signs, TA-33). The extra R2-1 at 1-mile intervals over 1 mile and the speed feedback sign over 4 hours are not.
• TA-10 pilot-car device spacing (TC-214 C = 160 ft at 50+) and the switch to TC-214 over 1/4 mile are not keyed to zone length; TA-10 is priced as TC-213.
• Shifting taper: no Iowa lane-shift sheet was verified (TC-61 prints a 780-ft / 15:1 taper for its own geometry only). The federal L/2 of the Iowa M table stands. No count impact on TA-33/30/30R/10.
• TA-30 opposing interior closure: TC-419's left-lane panel covers one direction only; no Iowa sheet for simultaneous opposing interior closures was verified. The federal both-directions TA-30 layout is priced with Iowa numbers.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MUTCD Table 6B-2 (Drawn with no optional mark on the KDOT lane-closure/flagger typicals (TE744, TE746, TE730); lengths per the TE700 Buffer Spacing table. No KDOT text states a shall.)
• sign_spacing: MUTCD Table 6B-1 row 'rural'
• taper_spacing: Taper REPLACES: 'Space devices in merging and shifting tapers so they do not exceed a distance in feet equal to 1/2 the posted speed limit (mph) prior to work starting' — Std Spec 2015 Section 805.3(f)(1), restated in TE700 'Channelizer Placement' note (1) as 'the spacing between devices in transition area (taper) should not exceed ... 1/2 the posted speed limit'. Half of the federal 1xS taper…
• tangent_spacing: Taper REPLACES: 'Space devices in merging and shifting tapers so they do not exceed a distance in feet equal to 1/2 the posted speed limit (mph) prior to work starting' — Std Spec 2015 Section 805.3(f)(1), restated in TE700 'Channelizer Placement' note (1) as 'the spacing between devices in transition area (taper) should not exceed ... 1/2 the posted speed limit'. Half of the federal 1xS taper…
• departure_spacing: Taper REPLACES: 'Space devices in merging and shifting tapers so they do not exceed a distance in feet equal to 1/2 the posted speed limit (mph) prior to work starting' — Std Spec 2015 Section 805.3(f)(1), restated in TE700 'Channelizer Placement' note (1) as 'the spacing between devices in transition area (taper) should not exceed ... 1/2 the posted speed limit'. Half of the federal 1xS taper…
• buffer_tangent_spacing: Taper REPLACES: 'Space devices in merging and shifting tapers so they do not exceed a distance in feet equal to 1/2 the posted speed limit (mph) prior to work starting' — Std Spec 2015 Section 805.3(f)(1), restated in TE700 'Channelizer Placement' note (1) as 'the spacing between devices in transition area (taper) should not exceed ... 1/2 the posted speed limit'. Half of the federal 1xS taper…

• drum when {"night": true}

ta-10, ta-11, ta-15, ta-18, ta-22, ta-23, ta-24, ta-25, ta-26, ta-3, ta-30r, ta-33, ta-6

• Downstream taper printed 100 ft on TE744/TE730 (also TE731, TE740, TE742); downstream_taper_ft = 100 and the departure taper is required on TA-33 and TA-30R.
• Departure-taper spacing scope: Section 805.3(f)(1)'s header says 'Tapers' and its body says 'merging and shifting tapers'. This file prices the departure taper at the federal 1xS. Under the header reading it would be 1/2*S and a 100-ft departure taper at 55 mph would carry 5 devices instead of 3.…
• Restricted-roadway lane-width signing (TE700 General Note 2): lane widths shall be a minimum of 11 ft; a lane under 10 ft should be closed; a lane between 10 and 11 ft should carry restricted-roadway signing W5-1 / W5-2 / W5-4. The engine takes --lane-width and uses it for L only. A Kansas job…
• Milled / temporary-surface signing (TE700 General Note 4): where the open driving surface is milled, carries loose temporary material, or as directed, W8-15 GROOVED PAVEMENT or W8-7 LOOSE GRAVEL shall be posted on mainline approaches a 'C' distance after the W20-1, supplemented by a W8-15p…
• KM4-20 WORK ZONE plaque (Section 805.3(b)): the plaque shall be installed above ALL existing and temporary R2-1 Speed Limit signs between the W20-1 and the KG20-2. No base template emits R2-1. The ks_wz_speed option adds the work-zone R2-1s and their KM4-20P. R2-1s already standing inside the zone…
• Adjacent work-zone merge (Section 805.3(b)): where two zones sit under 1 mile apart rural or under 1/4 mile apart urban, the first zone's KG20-2 and the second zone's W20-1 shall be dropped. This estimator prices one zone at a time, so back-to-back Kansas zones are over-counted by two signs.
• Temporary pavement-marking dimensions (Std Spec 2015 Section 805 Tables 805-1 / 805-2 / 805-3): Kansas prints its own broken-line pattern (8 ft line = 8/24/32) and RPM dimensions. The BOM prices markings as tape or paint, not equipment, and only ta-11 (yield line) and ta-24 (Note 10) touch them,…
• Taper separation (TE700): 'a distance of at least 2L should separate merging and shifting tapers'. The engine lays out one taper per segment and models no multi-taper spacing, so a Kansas plan that needs 2L of separation may not fit the zone length given.
• KG20-2 substitution is applied to every template in this estimator that emits an END ROAD WORK panel (ta-3, ta-6, ta-10, ta-11, ta-15, ta-18, ta-22, ta-23, ta-24, ta-25, ta-26, ta-30r, ta-33). Section 805.3(b) names KG20-2 statewide, not per-figure, so the substitution is not scoped to the seven…
• TA-11: KDOT's positive-control posture for TA-11 (devices-only, low-volume two-lane) is UNVERIFIED — no blocking clause was found on disk, so ta-11 emits the federal figure as drawn. If KDOT in fact requires flaggers there, the estimate is short two flaggers.
• Arrow display mode (Section 805.3(d)): the caution / alternating-diamonds mode is permitted only for shoulder work, near-shoulder roadside work, shoulder blocking, or a temporary one-lane closure on a two-lane two-way road; a lane closure gets arrow mode. The engine emits ARROW_BOARD as a count…
• Sign sheeting (Section 805.2(b)): all work-zone ORANGE signs shall use fluorescent orange Type IV or better sheeting, other work-zone signs Type III or better, and mesh signs are prohibited. The BOM carries no sheeting class, so the panel counts are right and the material spec is missing from the…
• Pilot car (Section 805 overlay / microsurfacing / curing subsections): flaggers may run traffic through a patching or curing operation unless the area or the distance between flaggers exceeds 1/2 mile, at which point a pilot car shall be required. ta-10 carries two flaggers unconditionally and the…
• Section 805.3(a) storage setback: vehicles, equipment, materials, tools and debris shall be stored off the right-of-way or at least 30 ft from the traveled way where practical, and anything the Engineer allows inside 30 ft shall be signed, positive-protected or channelized. Those signs and…
• Smart Work Zone queue warning (KDOT Smart Work Zone ITS special provision): where specified, real-time speed and occupancy sensors drive PCMS queue-warning and travel-time messages. It is a specified-when-bid assembly, not a default, so nothing is emitted and a Kansas project carrying the special…
• Kansas publishes no minimum device count per taper — there is no equivalent of PennDOT Pub 213's master chart anywhere in TE700 or Section 805 — so min_devices_in_taper is null and a short Kansas taper gets whatever the 1/2*S spacing produces, with no floor.
• City and county overlays are not asserted. The Wichita Lane Closure Guide returned HTTP 403 and was never acquired, so a Wichita job answered under this file is answered at state level.
• Source-currency risk: the Section 805 text encoded here is the 2015 Standard Specifications. Special provisions 15-08001-R03 and 15-08019-R02 revise Section 805 on current contracts; their text could not be fetched (ksdot.gov 403). The Dec-2025 TE700/TE702 restate the same 1/2 S, 2 S and…
• KDOT's own typicals (TE744 lane closure, TE730 flagger) drive the TA-33, TA-30R and TA-10 sign sets and required segments. The TE744 shoulder taper is required on TA-33 and TA-30R at a paved shoulder of 6 ft or wider (--shoulder-width, else the 8-ft default).
• Speed-to-road-type mapping is Keryk's: TE700 names road classes and keys the urban and rural rows by speed, but KDOT publishes no speed-to-class rule for expressway/freeway. Unverifiable; no count impact.
• Departure taper device spacing: no KDOT value. §805.3(f)(1) covers only merging and shifting tapers, and TE744 draws the 100-ft downstream taper undimensioned for spacing. The federal 1xS stands (3 devices on 100 ft at 55 mph). Unverifiable.
• TA-30 (urban interior lane, both directions): no KDOT typical matches. Every KDOT lane-closure sheet (TE740-748) carries KR2-6/KR2-11 and KG20-2 and draws the buffer non-optional; if the TE744 train applies, TA-30 is short about 2 KG20-2 and 2 KR2-6/KR2-11 pairs. Unverifiable, not asserted.

• L: KYTC TTC-115-04 L column, SP. LT. >=45
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: KYTC TTC-115-04 Note 8 (p33): 'TAPER LENGTH SHALL BE 0.33 L', L = the sheet's table L: 106 ft (SP. LT. <=40 row), 224 ft (SP. LT. >=45 row), 277 ft (Expressway/Freeway row). Same on TTC-120-04 Note 7 (p34) and TTC-125-04 Note 7. Required when the arrow panel sits on the shoulder or clear zone, or a paved shoulder >= 8 ft is closed.
• buffer: MUTCD Table 6B-2 (Option, MUTCD 6B.06 para 11)
• sign_spacing: KYTC TTC-115-04 Signing and Spacing Table row 'rural'
• taper_spacing: The headline Kentucky deviation: KYTC prescribes FIXED FEET, not a multiple of speed: 40 ft through the multilane merge taper and the shoulder taper (TTC-115-04 Notes 8/9), 80 ft through the activity area (TTC-100-05 Note 7; TTC-115-04 Note 10), and 20 ft through the downstream taper (TTC-115-04 Note 11). 2025 Traffic packet pp31, 33. Against the federal 1xS / 2xS these are tighter at every…
• tangent_spacing: The headline Kentucky deviation: KYTC prescribes FIXED FEET, not a multiple of speed: 40 ft through the multilane merge taper and the shoulder taper (TTC-115-04 Notes 8/9), 80 ft through the activity area (TTC-100-05 Note 7; TTC-115-04 Note 10), and 20 ft through the downstream taper (TTC-115-04 Note 11). 2025 Traffic packet pp31, 33. Against the federal 1xS / 2xS these are tighter at every…
• departure_spacing: The headline Kentucky deviation: KYTC prescribes FIXED FEET, not a multiple of speed: 40 ft through the multilane merge taper and the shoulder taper (TTC-115-04 Notes 8/9), 80 ft through the activity area (TTC-100-05 Note 7; TTC-115-04 Note 10), and 20 ft through the downstream taper (TTC-115-04 Note 11). 2025 Traffic packet pp31, 33. Against the federal 1xS / 2xS these are tighter at every…
• buffer_tangent_spacing: The headline Kentucky deviation: KYTC prescribes FIXED FEET, not a multiple of speed: 40 ft through the multilane merge taper and the shoulder taper (TTC-115-04 Notes 8/9), 80 ft through the activity area (TTC-100-05 Note 7; TTC-115-04 Note 10), and 20 ft through the downstream taper (TTC-115-04 Note 11). 2025 Traffic packet pp31, 33. Against the federal 1xS / 2xS these are tighter at every…

• drum when {"gt_hours": 72}
• drum when {"night": true}

ta-10, ta-30, ta-30r, ta-33

• TTC-100-05 Note 5 (p31): TA-10 tapers 50-100 ft at 20 ft. The ta-10 template's fixed 6 + 6 is the 100-ft end; at the 50-ft minimum each is 4.
• KYTC posts a 4th advance-sign gap D (freeway 2600, >=45 1100, <=40 500 / 250). The engine carries A/B/C only; placement only, no count change.
• TTC-100-05 prints the <=40 row as 250/250/250/250 (applied to TA-10); TTC-115/120/125/170 print 250/250/500/500 (applied to the other TAs).
• The KYTC table keys to the NORMAL posted limit, not a reduced work-zone speed. The estimator takes one speed.
• KYTC marks the buffer OPTIONAL on TTC-100-05 Note 6, TTC-115-04, TTC-120-04 and TTC-125-04. TA-10 leaves it out by default; TA-30R and TA-33 price it at Table 6B-2 where the template draws a required buffer. TA-30 leaves it out as optional per Fig 6P-30. --include-optional prices the optional…
• TA-30 (interior lane, both directions) has no KYTC sheet. If TTC-115-04 applies per direction: +2 W20-5, +2 G20-2, +2 departure tapers. Federal figure used.
• §112.03.01.A requires devices on approach and intersecting roads at least 1,500 ft from the construction limits. The estimator's side-street allowance places its signs at 150 ft.
• The federal TA-10 Note 3 short-duration omission of W20-1/G20-2 does not apply in KY; TTC-100-05 draws both, none optional.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MUTCD Table 6B-2 (Standard: LADOTD TTC-00(C) Buffer Space column, drawn as MIN Buffer Space on TTC-03/04/06/09)
• sign_spacing: MUTCD Table 6B-1 row 'rural'; louisiana override (A 500->1000, B 500->1640, C 500->800) per LADOTD TTC-09 rev 05-21-2026 spacing table (LA B = W4-2 to taper, LA A = W20-5 to W4-2, LA C = W3-5 to W20-5)
• taper_spacing: LADOTD TTC-00(C) rev 08-19-2026 Standard Device Spacing table (drums/super cones), along taper / along tangent: 25 mph 20/40, 30 mph 30/60, 35 mph 35/70, 40-75 mph 40/80. Departure: note 6D, 'Downstream Locations & Flaggers: drums or supercones at 20' max spacing. The length of taper shall be between 50' - 100' with a minimum of 6 devices.'
• tangent_spacing: LADOTD TTC-00(C) rev 08-19-2026 Standard Device Spacing table (drums/super cones), along taper / along tangent: 25 mph 20/40, 30 mph 30/60, 35 mph 35/70, 40-75 mph 40/80. Departure: note 6D, 'Downstream Locations & Flaggers: drums or supercones at 20' max spacing. The length of taper shall be between 50' - 100' with a minimum of 6 devices.'
• departure_spacing: LADOTD TTC-00(C) rev 08-19-2026 Standard Device Spacing table (drums/super cones), along taper / along tangent: 25 mph 20/40, 30 mph 30/60, 35 mph 35/70, 40-75 mph 40/80. Departure: note 6D, 'Downstream Locations & Flaggers: drums or supercones at 20' max spacing. The length of taper shall be between 50' - 100' with a minimum of 6 devices.'
• buffer_tangent_spacing: LADOTD TTC-00(C) rev 08-19-2026 Standard Device Spacing table (drums/super cones), along taper / along tangent: 25 mph 20/40, 30 mph 30/60, 35 mph 35/70, 40-75 mph 40/80. Departure: note 6D, 'Downstream Locations & Flaggers: drums or supercones at 20' max spacing. The length of taper shall be between 50' - 100' with a minimum of 6 devices.'

ta-10, ta-30, ta-30r, ta-33

• Louisiana overrides device spacing (TTC-00(C) rev 08-19-2026: 20/40 at 25 mph ... 40/80 at 40 mph and above), the departure/flagger taper (20 ft max, 50-100 ft, min 6 devices) and device class (drums; cones at 1/2 spacing by day, none at night, no 28-in cones over 40 mph). Taper L, shifting,…
• Night lights are priced on --night: Type C steady-burn lights on taper devices and the first 2 tangent devices (TTC-00(C) n7), 1 Type B light on the first lane-closure sign or pair (TTC-00(B) n3), and 2 Type B lights per barricade (TTC-00(C) n14). Without --night none are priced.
• Type III barricades are also required on each side of every intersection and crossover (TTC-00(C) rev 08-19-2026 notes 12-17). The estimator prices the closed-lane barricades only; intersection barricades depend on site geometry.
• Flaggers shall not be used on Interstate highways (TTC-00(B) rev 05-21-2026 n28). The estimator takes no facility class, so a TA-10 priced at interstate speeds carries a warning, not a block.
• Flagger qualification, device and apparel: qualified flagger via an ATSSA or LADOTD Work Zone Task Force-approved course, re-qualified every 4 years (TTC-00(B); LSSRB §713.3.070.B.4); minimum 18-in STOP/SLOW paddle on a 6-ft staff; ANSI Class 2 by day, Class 3 at night. The BOM carries a flagger…
• Portable changeable message sign: shall be used on all Interstate highways, and on other roadways with ADT over 20,000 where space is available, at least 2 miles ahead of the taper, with a second board about 5 miles ahead if queues pass the first (TTC-00(A)). Device spec: 3 lines x 8 characters,…
• Work-zone speed reduction: the Engineer may approve a 10-mph drop at posted speeds of 45 mph or more (TTC-00(A) rev 05-21-2026 n39). The engine takes one speed, so a 55-mph closure is priced at 55 (L = 660 ft, buffer = 495 ft) when the signed speed is 45 (L = 540, buffer = 360); device spacing is…
• Reduced-speed signs repeat past major intersections and at 1-mile (rural) / 1/2-mile (urban) intervals (TTC-00(A)). The estimator prices the R2-1 panels drawn on the TTC sheets plus the end-of-zone original-speed sign (n43); distance repeats on multi-mile projects are not priced.
• Lane-width floor: on interstates, NHS routes, truck routes, or roads with more than 5,000 ADT and 15% trucks, a minimum 11-ft lane shall be maintained unless the existing section prevents it (TTC-00(A) rev 05-21-2026 n20); 10 ft elsewhere where practical. On mainline interstates at least 1.5 ft of…
• Arrow boards shall be 4 ft x 8 ft Type C, as close to the start of the taper as practical, and not used for lane shifts (TTC-00(A)). The BOM prices the count, not the size or type.
• TMA with a green/amber-light truck shall be used on all interstate projects and on roadways with ADT over 20,000 at pre-construction speed 40 mph or more (TTC-09 n5, TTC-06 n2, TTC-03/04 n6); roll-ahead = manufacturer distance + 100 ft. The estimator has no ADT or facility input, so the TMA is…
• Warning signs shall be 48 in x 48 in (TTC-00(B)); lateral offset at least 6 ft from the edge of shoulder (2 ft from back of curb in urban areas); mounting height 5 ft rural / 7 ft urban; mesh roll-up signs are prohibited. The BOM carries sign codes, not sizes, sheeting or supports.
• Work-area length caps: 2 miles on two-lane two-way highways, 4 miles elsewhere (TTC-00(B)). --zone-length is not checked against them.
• Queue analysis shall be performed before approving lane closures on all freeways and expressways (TTC-00(B) rev 05-21-2026 n19, citing TEM Section 6A.1); TEM Jan 2026 §6.01 applies it to Interstates with ADT of 25,000 or more. A permitting step with no BOM quantity.
• Where the work area is on one side only, no conflicting operations or parking may occur on the opposite shoulder within 500 ft (TTC-00(A)). Not checked.
• Contract requirements with no BOM quantity: closure notice of 5 working days (10 plus a TCP for closures not in the plans) (TTC-00(B)); a TCT or TCS on site during working hours, and a TCS on site at all times on freeways, expressways, interstates, multilane roads posted 45 mph or more, and roads…
• Temporary pavement markings: minimum 4 in wide, in place by the end of each day; short-term 4-ft tape on 40-ft centers (LSSRB §713.2.010 / §713.3.050). Markings are a length pay item and are not priced.
• Nighttime illumination: 5 / 10 / 20 fc by task level, 5 fc minimum throughout the work area (LSSRB §713.3.080.C); lighting plan 30 days ahead (§713.3.080.E). Light plants are not priced.
• Temporary concrete barrier: 15-ft units on a paved surface, reflectors no more than 15 ft apart (LSSRB §713.3.040). Barrier is a length item and is not priced.
• Divided-highway sign duplication is true for TA-33: 'On divided highways, signs shall be placed on the right and the left as shown on the TTC standards' (TTC-00(B)). The federal template already posts each advance sign right and median; the TA-33 additions carry TTC-09's both-sides quantities.
• Horizontal curves with radius under 300 ft need 25-ft device spacing (TTC-00(C) rev 08-19-2026). The estimator has no curve input.
• TA-11: no Louisiana devices-only sheet was found, so the federal figure stands.
• City and parish supplements (New Orleans, Baton Rouge) are not modelled.
• Three Louisiana rules key on AADT (PCMS over 20,000; queue analysis and full-time TCS at 25,000 or more). The estimator takes no AADT input.
• +1 flagger per operation when equipment or workers encroach within 2 ft of an open lane, posted inside the work zone upstream of each operation (TTC-06 n4, TTC-09 n6, rev 05-21-2026). No encroachment input, so not priced.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MaineDOT Std Detail 652(15) Suggested Buffer Zone Lengths (Option (published as 'Suggested'))
• sign_spacing: MaineDOT Std Detail 652(15) Sign Spacing Table / 652(11) p.363 expressway spacing row 'rural'
• taper_spacing: MaineDOT Standard Details 2026 Ed, Std Detail 652(15), PDF p.367 (identical in the March 2020 Ed, p.349), 'Channelization Device Spacing' (Standard): 'shall not exceed a distance in feet equal to 1.0 times the speed limit in mph when used for taper channelization, and ... 2.0 times the speed limit in mph when used for tangent channelization.' Maine hardens the federal Guidance. No separate…
• tangent_spacing: MaineDOT Standard Details 2026 Ed, Std Detail 652(15), PDF p.367 (identical in the March 2020 Ed, p.349), 'Channelization Device Spacing' (Standard): 'shall not exceed a distance in feet equal to 1.0 times the speed limit in mph when used for taper channelization, and ... 2.0 times the speed limit in mph when used for tangent channelization.' Maine hardens the federal Guidance. No separate…
• departure_spacing: MaineDOT Standard Details 2026 Ed, Std Detail 652(15), PDF p.367 (identical in the March 2020 Ed, p.349), 'Channelization Device Spacing' (Standard): 'shall not exceed a distance in feet equal to 1.0 times the speed limit in mph when used for taper channelization, and ... 2.0 times the speed limit in mph when used for tangent channelization.' Maine hardens the federal Guidance. No separate…
• buffer_tangent_spacing: MaineDOT Standard Details 2026 Ed, Std Detail 652(15), PDF p.367 (identical in the March 2020 Ed, p.349), 'Channelization Device Spacing' (Standard): 'shall not exceed a distance in feet equal to 1.0 times the speed limit in mph when used for taper channelization, and ... 2.0 times the speed limit in mph when used for tangent channelization.' Maine hardens the federal Guidance. No separate…

• drum when {"road_types": ["freeway"]}

ta-10, ta-30, ta-30r, ta-33

• 652(11) expressway layout (2026 Ed p.363): W20-1 ROAD WORK 1 MILE; 2640 ft; W20-5 1/2 MILE (W13-1 optional); 500 ft R4-1; 500 ft arrow diamond with XX MPH plaque; 500 ft W4-2; 500 ft R2-1(X) WORK ZONE SPEED LIMIT FINES DOUBLED; 500 ft to the L/3 shoulder taper; both shoulders. R4-1, R4-2 and the…
• 652(11) notes: 'Omit W20-1 if lane closure signing array is within project limits' and 'Road Work 2 Miles and 3 Miles signs may be needed, as per resident'. Neither is an input.
• 652(09) (2026 Ed p.361) is a non-interstate one-way lane closure behind temporary concrete barrier, 55 mph or less. It draws drums in the taper only; the tangent is barrier, which the TA-33 template does not model. It is cited here for G20-2 and both-shoulder signing only. 652(08) Note 1 (p.360):…
• Std Spec March 2026 652.2.4: cones at least 28 in for all conditions (no 18-in cone); Interstate vertical panels 12x36; metal drums banned. device_class carries no height.
• Std Spec March 2026 652.3.6: minimum roadway width 22 ft two-way, 11 ft one-way (shall); 652(07)/(09) dimension '11' min.'. No lane-width check is run.
• Std Spec March 2026 652.3.4: drums or barricades at a maximum 50-ft spacing in guardrail-gap areas. No guardrail input.
• 652(10)/(12) project approach signing (2026 Ed p.362, p.364): G20-1 ROAD WORK NEXT X MILES on expressways when the project is 3/4 mile or longer; W20-1 500 FT + G20-2 500 ft past the limit of work. There is no project-length input; +1 sign per approach on long expressway projects.
• 652(15) gives the shoulder taper as 'at least 0.33 L' but does not say whether W is the shoulder or the lane width. It is computed at the shoulder width (147 ft at 55 mph on an 8-ft shoulder vs 220 ft at 12-ft L/3; 5 devices either way under the 5-device floor). 652(15) General Note 3 ('Shoulder…
• TA-30 / TA-30R: Maine publishes no two-way multi-lane lane-closure typical (652(07)-(14), pp.359-366; 652(09) is one-way only). Federal Fig 6P-30 governs by reference (Std Spec 652.3.4); the 652(15) numbers (buffer, 5-device floor, spacing) apply.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MUTCD Table 6B-2 (Required minimum = SSD at posted speed (MassDOT Construction Standards 852.x, Jan 2025))
• sign_spacing: MUTCD Table 6B-1 row 'rural'; massachusetts override (A 500->1000, B 500->1500, C 500->2640) per MassDOT 852.6.x/852.7.x (Jan 2025); MA draws two advance signs, C unused
• taper_spacing: Federal 6K.01 para 04: 1.0*S in taper, 2.0*S on tangent; checked against MassDOT 852.x (Jan 2025).
• tangent_spacing: Federal 6K.01 para 04: 1.0*S in taper, 2.0*S on tangent; checked against MassDOT 852.x (Jan 2025).
• departure_spacing: Federal 6K.01 para 04: 1.0*S in taper, 2.0*S on tangent; checked against MassDOT 852.x (Jan 2025). (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: Federal 6K.01 para 04: 1.0*S in taper, 2.0*S on tangent; checked against MassDOT 852.x (Jan 2025).

ta-10, ta-30, ta-30r, ta-33

• 700 CMR 6.05 decides who directs traffic by road tier: Police Detail on a High Speed Road (>=45 mph with ADT >= 4,000); certified Road Flagger on a Low Speed Road (<45 mph) or a Low Traffic High Speed Road (>=45 mph with ADT < 4,000); Road Flagger allowed on a High Speed Road where continuous…
• MA Road Flaggers shall be at least 18, complete the MassDOT-approved certification program and carry a valid certification card (700 CMR 6.00). The BOM carries a headcount only.
• The MA minimum cone height is a flat 36 in (Standard Specifications 850 / 851.1) against the federal 18 in / 28 in, and Item 851 was replaced by Item 851.1 'Traffic Cones for Traffic Management' (QTCE list). device_class carries no height; quantities are unchanged.
• MassDOT's TTC templates are Construction Standards 852.x (Jan 2025; 852.4.1 / 852.4.4 / 852.6.1 / 852.6.5 / 852.7.3 / 852.7.5). This overlay encodes their segments, signs, TMAs and spacing ladders. The 2017 TMP and Detail Drawings are superseded.
• 700 CMR 6.03 lists setup length, duration and time of day as project-tiering criteria with no numeric thresholds; they are set in the Construction Zone Safety Plan or by the Awarding Authority.
• Sign and device edits in the Jan 2026 MA Amendments Part 6 are not reflected; geometry is from 852.x (Jan 2025). The Nov 2022 Amendments changed no geometry tables.
• TA-11 is priced on the federal figure. 700 CMR 6.05 frames traffic direction as Road Flaggers or Police Details; whether that precludes a devices-only setup is not settled.
• Shoulder width: MA publishes no default. 852.6.1/852.7.5 key the shoulder taper on the actual shoulder width. The 8-ft default is not an MA value; pass --shoulder-width.
• TA-30R: the shoulder taper (852.6.1) is always priced. An undivided street with no shoulder has none.
• Sequential warning lights (852.x Note 1, first 10 drums per lane-closure taper, dusk to dawn) are priced on --night: +10 per taper (+20 on TA-30).
• 852.7.3 TPRS + MA-W28-1 apply only to setups of 12 h or less: --option ma_short_term_tprs prices the MA-W28-1 signs; the TPRS array is not priced. MA-R2-10a FINES DOUBLED / MA-R2-10e (2022 Amendments 6F.12 / 6F.57, >= 24 h) are not priced.
• TMAs are required at 45 mph and up (852.x, drawn for 45-65 mph). Below 45, TA-30/TA-33 keep the federal optional TMA; TA-30R prices none. Behind temporary barrier they may be omitted (852.7.5 Note 4); there is no barrier input.
• Night device class: 851.1.1 Note 2 (Guidance) asks for drums in tapers at night, cones on the tangent. The class stays cone; a warning on TA-30, TA-30R and TA-33 gives the swap.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: FIG-03 taper criteria 'at least 0.33 L' (mesa.js TAPER_CRITERIA)
• buffer: Mesa publishes no buffer; arizona.js BUFFER_POLICY 0 ft applies (mesa.js BUFFER_POLICY, MS-G3)
• sign_spacing: TTCM FIG-03 row 'FIG-03 >45 mph band (Urban high speed, §3.6.1), 500 ft'
• taper_spacing: TTCM Table 3: taper 1 x S capped at 40 ft, tangent 2 x S capped at 80 ft; activity area shall not exceed 50 ft (§3.7, new in 2nd Ed) (mesa.js CHANNELIZING_DEVICE_SPACING). Work zone min(50, 2S) (§3.7 activity cap); buffer min(80, 2S). Departure 20 ft = MUTCD 6B.08 downstream-taper Guidance (~20 ft), as arizona.json, within the Table 3 40 ft taper cap.
• tangent_spacing: TTCM Table 3: taper 1 x S capped at 40 ft, tangent 2 x S capped at 80 ft; activity area shall not exceed 50 ft (§3.7, new in 2nd Ed) (mesa.js CHANNELIZING_DEVICE_SPACING). Work zone min(50, 2S) (§3.7 activity cap); buffer min(80, 2S). Departure 20 ft = MUTCD 6B.08 downstream-taper Guidance (~20 ft), as arizona.json, within the Table 3 40 ft taper cap.
• departure_spacing: TTCM Table 3: taper 1 x S capped at 40 ft, tangent 2 x S capped at 80 ft; activity area shall not exceed 50 ft (§3.7, new in 2nd Ed) (mesa.js CHANNELIZING_DEVICE_SPACING). Work zone min(50, 2S) (§3.7 activity cap); buffer min(80, 2S). Departure 20 ft = MUTCD 6B.08 downstream-taper Guidance (~20 ft), as arizona.json, within the Table 3 40 ft taper cap.
• buffer_tangent_spacing: TTCM Table 3: taper 1 x S capped at 40 ft, tangent 2 x S capped at 80 ft; activity area shall not exceed 50 ft (§3.7, new in 2nd Ed) (mesa.js CHANNELIZING_DEVICE_SPACING). Work zone min(50, 2S) (§3.7 activity cap); buffer min(80, 2S). Departure 20 ft = MUTCD 6B.08 downstream-taper Guidance (~20 ft), as arizona.json, within the Table 3 40 ft taper cap.

ta-10, ta-30, ta-30r, ta-33

• FIG-27 second W20-1 and far-side taper beyond the signalized intersection (MS-G13): a second taper chain, not authored by the reference either.
• R4-7a / R4-8a KEEP RIGHT / LEFT on FIG-27 / FIG-42 (:566, :676): drawn, no asset.
• FIG-28 bike-lane variant and FIG-46 AFAD variant: planner choices, not inputs.
• Work-zone speed limit signs, three per 1/2 mile per direction (§3.6.2): FIG-29 ladder out of confirmed scope.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MDOT 101-GEN-SPACING-CHARTS sht 1, 'GUIDELINES FOR LENGTH OF LONGITUDINAL BUFFER SPACE, B' (Option (2025 MMUTCD Section 6B buffer space); MDOT note G4 bars storage in the buffer)
• sign_spacing: MUTCD Table 6B-1 row 'rural'; michigan override (A 500->550, B 500->550, C 500->550) per 101-GEN-SPACING-CHARTS (MAY 2021) sht 1 'D' table; D = 10 x 55 mph
• taper_spacing: Below 45 mph Michigan uses 1.0 x S in the taper and 2.0 x S on the tangent. At 45 mph and above MDOT caps both at a fixed distance: 50 ft in any taper, 100 ft on any tangent (101-GEN-SPACING-CHARTS sht 2 of 3; 102-GEN-NOTES TCD1/TCD2; Std Spec 812.03.D.6.a Table 812-1 p.549). At 70 mph that is 50/100 against federal 70/140. MDOT publishes no separate downstream-taper column and caps 'any taper',…
• tangent_spacing: Below 45 mph Michigan uses 1.0 x S in the taper and 2.0 x S on the tangent. At 45 mph and above MDOT caps both at a fixed distance: 50 ft in any taper, 100 ft on any tangent (101-GEN-SPACING-CHARTS sht 2 of 3; 102-GEN-NOTES TCD1/TCD2; Std Spec 812.03.D.6.a Table 812-1 p.549). At 70 mph that is 50/100 against federal 70/140. MDOT publishes no separate downstream-taper column and caps 'any taper',…
• departure_spacing: Below 45 mph Michigan uses 1.0 x S in the taper and 2.0 x S on the tangent. At 45 mph and above MDOT caps both at a fixed distance: 50 ft in any taper, 100 ft on any tangent (101-GEN-SPACING-CHARTS sht 2 of 3; 102-GEN-NOTES TCD1/TCD2; Std Spec 812.03.D.6.a Table 812-1 p.549). At 70 mph that is 50/100 against federal 70/140. MDOT publishes no separate downstream-taper column and caps 'any taper',…
• buffer_tangent_spacing: Below 45 mph Michigan uses 1.0 x S in the taper and 2.0 x S on the tangent. At 45 mph and above MDOT caps both at a fixed distance: 50 ft in any taper, 100 ft on any tangent (101-GEN-SPACING-CHARTS sht 2 of 3; 102-GEN-NOTES TCD1/TCD2; Std Spec 812.03.D.6.a Table 812-1 p.549). At 70 mph that is 50/100 against federal 70/140. MDOT publishes no separate downstream-taper column and caps 'any taper',…

• cone_42in when {"max_hours": 12, "night": false}

ta-10, ta-30, ta-30r, ta-33

• Sign spacing is enumerated at the published 5-mph increments 25-75 mph only. MDOT states D as a formula (D = 10 x posted speed), but overrides carry constants, so an off-grid posted speed (27 mph, 62 mph) gets the federal Table 6B-1 row. Below 25 mph and above 75 mph MDOT publishes no D.
• MDOT keys channelizer spacing to the work-zone speed limit (102-GEN-NOTES TCD1/TCD2). The estimator spaces on the posted speed, so a job with a work-zone speed reduction below 45 mph is under-counted.
• The downstream taper is 100 ft per lane in Michigan (101-GEN-SPACING-CHARTS sht 2). One lane is closed per direction on every TA here, so one 100-ft run per direction is priced.
• TA-10 one-lane two-way and downstream tapers are taken at MDOT's recommended 100 ft at <=15-ft spacing (TRIM (2010) p.17, Guidance): 8 devices each. At the 50-ft minimum 110-TR-NFW-2L allows, the count is 5.
• MCL 247.291: 'No highway shall be closed ... until suitable barriers have been erected at the ends of the highway or of the closed portion thereof, and also at the point of intersection of such highway ... with other highways' (reprinted in MMUTCD). No per-intersection Type III barricades are…
• MDOT's TMA roll-ahead table (101-GEN-SPACING-CHARTS sht 3; WZSMM Tables 8-4/8-5) is keyed by test level x TMA weight x speed band, 25 ft to 175 ft. TL-2 attenuators are prohibited at 45 mph and above (WZSMM 8.07.05), and the shadow-vehicle trigger is 45 mph and two or more lanes per direction. The…
• The Michigan default is two Traffic Regulators, one per approach; a single regulator is allowed only when a short work area, a straight road with visibility both ways, under 400 veh/day and under 45 mph all hold (Traffic Regulator's Instruction Manual p.20). That gate is not evaluated. Flagger…
• WZSMM 8.06.03: all orange diamond warning signs should be 48 x 48 in; R5-18b and R5-18c are 48 x 48 as well. The BOM counts sign panels, not sizes.
• Portable rumble strips (an array of 3 at 10-20 ft, arrays at 200 ft, 65 mph ceiling, plus a W8-26 RUMBLE STRIPS AHEAD sign) and AFADs (MDOT-preferred for low-volume one-lane two-way work; pair no more than 750 ft apart under a single regulator; standby regulator past 4 hours) have no line item here.
• Ballast: 30 lb on freeway and 15 lb off freeway per 42-in channelizer (WZSMM 6.01.03); lights are not allowed on 42-in channelizers. Ballast is not a BOM class.
• The TA-33 advance sequence is duplicated on both shoulders, outside and median (203/204 sht 1), pinned with ta_overrides.ta-33.divided_highway_duplication = true.
• MDOT hardware rules with no BOM class: only Type III barricades may be used with motorized traffic on MDOT projects (WZSMM 6.01.06); ground-driven sign supports are required on projects longer than 14 days (Std Spec 812.03.D.1/D.3); temporary panels are 48x48x1/2 in MDO plywood on a 1-3/4 in PSST…
• R5-18b is priced from --days (15 days on freeway, 90 days elsewhere). The freeway band is speed-derived on TA-33; pass --road-type freeway or rural when the facility differs.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MUTCD Table 6B-2 (Option, MN MUTCD 6B.06 para 11 ('If a longitudinal buffer space is used, the values shown in Table 6B-2 may be used'))
• sign_spacing: MN MUTCD 11th Ed Table 6B-1 (M) 'Recommended Advance Warning Sign Minimum Spacing'. Minnesota REPLACES the federal road-type A/B/C ladder with ONE speed-keyed distance, so A = B = C is what the state publishes, not a flattening artifact. Published rows: 0-30 mph = 100 ft; 35-40 = 325 ft; 45-50 = 600 ft; 55 = 750 ft; 60-65 = 1,000 ft; 70 = 1,200 ft. Federal 100/350/500 and 1000/1500/2640 do NOT…
• taper_spacing: taper 1.0*S (MN MUTCD 6K.01 para 04, republished federal Guidance). Tangent 2.0*S capped at 100 ft: MN MUTCD 11th incl Rev 1 6K.01 para 04.1 (Guidance), p.6K-1: 'On high-speed roadways, the spacing between cones, tubular markers, vertical panels, and drums should not exceed 100 feet'; Fig 6K-1 (M) defines high-speed as 45 mph or more, and below 45 mph 2S is 80 ft or less, so min(2*S, 100) is…
• tangent_spacing: taper 1.0*S (MN MUTCD 6K.01 para 04, republished federal Guidance). Tangent 2.0*S capped at 100 ft: MN MUTCD 11th incl Rev 1 6K.01 para 04.1 (Guidance), p.6K-1: 'On high-speed roadways, the spacing between cones, tubular markers, vertical panels, and drums should not exceed 100 feet'; Fig 6K-1 (M) defines high-speed as 45 mph or more, and below 45 mph 2S is 80 ft or less, so min(2*S, 100) is…
• departure_spacing: taper 1.0*S (MN MUTCD 6K.01 para 04, republished federal Guidance). Tangent 2.0*S capped at 100 ft: MN MUTCD 11th incl Rev 1 6K.01 para 04.1 (Guidance), p.6K-1: 'On high-speed roadways, the spacing between cones, tubular markers, vertical panels, and drums should not exceed 100 feet'; Fig 6K-1 (M) defines high-speed as 45 mph or more, and below 45 mph 2S is 80 ft or less, so min(2*S, 100) is…
• buffer_tangent_spacing: taper 1.0*S (MN MUTCD 6K.01 para 04, republished federal Guidance). Tangent 2.0*S capped at 100 ft: MN MUTCD 11th incl Rev 1 6K.01 para 04.1 (Guidance), p.6K-1: 'On high-speed roadways, the spacing between cones, tubular markers, vertical panels, and drums should not exceed 100 feet'; Fig 6K-1 (M) defines high-speed as 45 mph or more, and below 45 mph 2S is 80 ft or less, so min(2*S, 100) is…

• cone_42 when {"min_hours": 73}
• cone_28in when {"min_speed": 45}
• cone_28in when {"night": true}

ta-10, ta-30, ta-30r, ta-33

• Minn. Stat. 169.14 subd. 5d(a): where at least one lane (or part of one) is closed and workers are present, an established limit of 50 mph or greater drops to 45 mph by statute, unless (5d(b)) the zone has positive barrier, is in place less than 24 hours, has a limit set by engineering study, or…
• Minn. Stat. 169.14 subd. 5d(c) caps a work-zone reduction at 20 mph where the established limit is 55 mph or more and 15 mph where it is 50 mph or less. There is no floor.
• Work-zone double-fine signing: FINES DOUBLE / R2-10 / R2-11 and the R2-6bP plaque ($300; MN MUTCD Rev 1 Fig 6G-1, Minn. Stat. 169.06 subd. 4a). Not priced.
• MN MUTCD 11th incl Rev 1 6B.08 para 14 (M): one-lane two-way taper 50 ft min at ~10 ft or 100 ft max at ~20 ft. Both give 6 devices, so fixed_count 6 is MN-published. The only MN change from federal is the ~10-ft spacing at the 50-ft minimum.
• Figs 6P-11, 6P-19 and 6P-20 (M) are not yet diffed against federal; the overlay pairs federal component lists with MN numeric drivers for them. Figs 6P-10, 6P-30 and 6P-33 (M) match the template plus the overrides listed here.
• TA-33 departure taper left optional. The 2018 MnDOT TTC Field Manual draws a ~100 ft downstream taper at 20-ft spacing on lane closures, but no MN shall requires it for TA-33. If MnDOT requires it, add ~6 devices per TA-33.
• Device materials, sheeting tiers and pay items are defined in MnDOT Standard Plates and Std Spec 2020 (Sec 1404 Maintenance of Traffic; Sec 1710 Traffic Control Devices). The traffic-control pay-item section (e.g. 2563) is not modelled. Cone height gates (28 in / >36 in) are in device_class.gates.
• Flagging distances: the 2018 MN Flagging Handbook publishes a speed-keyed chart for device spacing, taper length and flagging-station distance. Flagging-station distance is not a BOM line item, and the chart has not been reconciled against the MN MUTCD 11th incl Rev 1 (June 2026) Part 6.
• TA-11: whether MnDOT field practice allows a devices-only TA-11 or requires positive control is not settled; the TA-11 flagger count comes from the federal figure.
• MnDOT significant-project thresholds and TMP requirements (Tech Memo 22-08-T-02), temporary barrier placement (MnDOT Temporary Barrier Guidance 2018), IWZ queue-warning / dynamic-speed / WZDx devices (IWZ Toolbox 2020) and Metro / District 3 / District 6 lane-closure permitting have no field here.
• Only the Part 6 master tables were checked against federal: 6B-2, 6B-3 and 6B-4 identical, 6B-1 MN-modified. Another (M)-marked Part 6 table could still move a geometry number this file treats as federal.
• Minneapolis and St. Paul city rules are not modelled. This file is MnDOT statewide only.
• Default shoulder width: MnDOT publishes none; Notes for Fig 6P-33 (p.6P-68) only reference shoulders of 8 ft or more. shoulder_width_ft stays 8 (shoulder taper only).
• R11-X2 and its Type 3 barricade are priced on right-lane closures at 45 mph and up (TA-33, TA-30R), as drawn on Fig 6P-33 (M). 6G.04.1 para 04 Option allows another mount; Rev 1 removed both from left-lane closure figures.

• L: MDOT Std Dwg TCP-2 (rev 12/11/25) PDF p.125, TCP-3..5 identical; GN1: the layout shall be based on the table. At 40 mph and below the '<40' row governs: 320 ft, printed for a 12-ft lane only; a 10- or 11-ft lane takes 320 x W/12 (267, 293). The federal formula (W x S^2/60) gives less below 40 mph and is not used there. From 45 mph up the 12-ft TAPER LENGTH column equals the federal L = W x S (45…
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MDOT Std Dwg TCP-2 PDF p.125 (both panels) and TCP-5 PDF p.128, TCP-3/4 same: '1/3 L' dimensioned upstream of the merging taper, drums drawn starting on the shoulder, no optional marking. L is read at the 12-ft lane width, per the sheet's table.
• buffer: MDOT TCP-2..5 LONGITUDINAL BUFFER SPACE (shall (GN1) with Engineer-adjust footnote: "BUFFER SPACE MAY BE ADJUSTED AS NEEDED ACCORDING TO ROADWAY GEOMETRY TO MEET SIGHT DISTANCE REQUIREMENTS, AS DIRECTED BY THE ENGINEER.")
• sign_spacing: MUTCD Table 6B-1 row 'rural'; mississippi override (A 500->1000, C 500->1100) per MDOT TCP-2 (rev 12/11/25) PDF p.125 drawn dimensions
• taper_spacing: MDOT Std Dwg TCP-2 (rev 12/11/25) PDF p.125 MAXIMUM CHANNELIZING DEVICE SPACING: '<40' row taper 40 / tangent 80, then 1.0 x / 2.0 x speed; TCP-3..5 identical.
• tangent_spacing: MDOT Std Dwg TCP-2 (rev 12/11/25) PDF p.125 MAXIMUM CHANNELIZING DEVICE SPACING: '<40' row taper 40 / tangent 80, then 1.0 x / 2.0 x speed; TCP-3..5 identical.
• departure_spacing: MDOT Std Dwg TCP-2 (rev 12/11/25) PDF p.125 MAXIMUM CHANNELIZING DEVICE SPACING: '<40' row taper 40 / tangent 80, then 1.0 x / 2.0 x speed; TCP-3..5 identical. (no departure-taper column published; taper spacing used)
• buffer_tangent_spacing: MDOT Std Dwg TCP-2 (rev 12/11/25) PDF p.125 MAXIMUM CHANNELIZING DEVICE SPACING: '<40' row taper 40 / tangent 80, then 1.0 x / 2.0 x speed; TCP-3..5 identical.

• drum when {"min_hours": 24, "tas": ["ta-33"]}

ta-10, ta-33

• TCP-1 flagger buffer applies to TA-10 only. TA-11 and other flagger templates take federal Table 6B-2.
• MDOT's EXTENDED PERIOD sheets TCP-3 and TCP-4 ban the 28-in cone: drums in every taper, drums or 42-in cones/tubular markers in tangents. The WORK DAY ONLY sheets for the same roads, TCP-2 and TCP-5, allow the 28-in cone. 'Extended period' is not defined in hours, so the drum gate is set at 24 h…
• Speed coverage: TCP-1 tops out at 65 mph, TCP-2 through TCP-5 at 70 mph, and TCP-2 and TCP-3 are titled 'for posted speed limit less than 65 MPH'. Above those speeds every value is federal.
• TCP-11 (temporary construction crossover) requires drums at 20 ft on centre through the buffer space. There is no crossover template, so it is not priced.
• No MDOT sheet publishes a shifting-taper length or a minimum channelizing-device count in a taper; both fall through to the federal manual (Table 6B-3; no federal minimum count).
• MDOT's buffer and sign-spacing tables carry an Engineer-discretion clause: "BUFFER SPACE MAY BE ADJUSTED AS NEEDED ACCORDING TO ROADWAY GEOMETRY TO MEET SIGHT DISTANCE REQUIREMENTS, AS DIRECTED BY THE ENGINEER" and Std Spec 618's "approximate ... may be adjusted as necessary to fit field…
• TA-33 is signed on drawn dimensions at every speed. TCP-2 (PDF p.125, below 65 mph): 1000' / 500' / 1100' / 2600'. TCP-4 and TCP-5 (PDF pp.127-128, 65 mph and up) dimension 1000' / 500' / 500' / 500' / 600' / 400' / 1600' with (1500'), (1/2 MILE) and (1 MILE) callouts: the W20-5 ladder is…
• At 65+ mph (TCP-4 Note 9, TCP-5 Note 11) a fluorescent orange plaque is required on every R2-1 and W3-5; TCP-2 draws one on the reduced R2-1. Plaques are not priced.
• TCP-4 Note 6 / TCP-5 Note 8: two more reduced R2-1 per entrance ramp inside the speed zone, located by the Engineer. Not priced; add 2 x ramps.
• Speed-to-road-type bands 46-59 rural and 60-80 freeway: MDOT keys RURAL and EXPRESSWAY/FREEWAY by facility, not speed, and its URBAN row runs 40-70 (TCP-1 PDF p.124). Pass --road-type when the facility differs. Placement only.
• TA-30 and TA-30R: MDOT has no undivided multilane or interior-lane closure sheet, and TCP-2 ('4-LANE: MEDIAN LANE OR OUTSIDE LANE CLOSURE') is drawn with separated carriageways. The federal component list is kept. If TCP-2 governs TA-30R, the TA-33 shoulder and exit tapers and the TCP-2 sign set…

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MUTCD Table 6B-2 (Option, MUTCD 6B.06 para 11 (11th Ed numbering) = EPG 616.2)
• sign_spacing: MUTCD Table 6B-1 row 'rural'
• taper_spacing: taper 1xS, tangent 2xS per federal MUTCD 6K.01 para 04 (EPG 616.11). departure 20 ft per EPG 616.2.8.4 (Guidance): 'a downstream (closing) taper should have an approximate length of 100 feet with devices placed at a spacing of approximately 20 feet'; Table 616.2.8.1 prints Downstream Taper = 100 feet (oldid 58006, 12 Jan 2026).
• tangent_spacing: taper 1xS, tangent 2xS per federal MUTCD 6K.01 para 04 (EPG 616.11). departure 20 ft per EPG 616.2.8.4 (Guidance): 'a downstream (closing) taper should have an approximate length of 100 feet with devices placed at a spacing of approximately 20 feet'; Table 616.2.8.1 prints Downstream Taper = 100 feet (oldid 58006, 12 Jan 2026).
• departure_spacing: taper 1xS, tangent 2xS per federal MUTCD 6K.01 para 04 (EPG 616.11). departure 20 ft per EPG 616.2.8.4 (Guidance): 'a downstream (closing) taper should have an approximate length of 100 feet with devices placed at a spacing of approximately 20 feet'; Table 616.2.8.1 prints Downstream Taper = 100 feet (oldid 58006, 12 Jan 2026).
• buffer_tangent_spacing: taper 1xS, tangent 2xS per federal MUTCD 6K.01 para 04 (EPG 616.11). departure 20 ft per EPG 616.2.8.4 (Guidance): 'a downstream (closing) taper should have an approximate length of 100 feet with devices placed at a spacing of approximately 20 feet'; Table 616.2.8.1 prints Downstream Taper = 100 feet (oldid 58006, 12 Jan 2026).

ta-10, ta-15, ta-24, ta-25, ta-26, ta-30, ta-30r, ta-33

• WORK-ZONE SPEED REDUCTION, the headline Missouri deviation (EPG 616.18, oldid 57906). Table 616.18 'Recommended Maximum Speed Reductions': recommended maximum 10 mph reduction when workers are in or within 10 ft of the traffic lane or for head-to-head operations; none when workers are more than 10…
• WORK ZONE FINE sign set (EPG 616.18.1, oldid 57906; EPG 616.18.1 cites RSMo 304.582.1 directly). Carried as option_signs mo_work_zone_fine (--option mo_work_zone_fine, gated to >=60 mph) on TA-33 (CONST-3A x1, R4-1 x2, G20-5aP x2, R4-2 x2, CONST-3X x2), TA-30 (same), TA-30R (same as TA-33) and…
• 70-MPH MISSOURI CEILING: EPG Table 616.2.6 stops at 70 mph / 730 ft and Missouri's statutory maximum speed is 70. buffer.max_ft clamps the buffer to 730 ft, so a 75-mph request returns 730 ft, not the federal 820 ft. Missouri sets no buffer floor (EPG 616.2.6).
• DEVICE SPACING: the shift-taper ~10 ft device spacing (short-term, markings not modified) is a Missouri addition with no federal counterpart (EPG 616.2.8.2 Guidance, oldid 58006; MUTCD 11th 6B.08 paras 07-08 has no 10-ft figure). Short-term duration and unmodified markings are not estimator…
• TCFO MAXIMUM WORK-ZONE LENGTHS (EPG 616.27.2.7.1, oldid 58202): urban 1 mile, rural divided 2 miles, rural undivided 3 miles. This is a 'recommended maximum' (not a cap) for MoDOT-forces maintenance only; EPG 616.27 'is applicable to maintenance operations ... any field operation performed by a…
• Mounting per Std Plan 616.10BF sht 1 Table A (eff. 7/1/2025): post 5 ft rural undivided / 7 ft rural divided & urban; Type 1 portable at the same heights only where post mounting is not feasible, 3-ft lateral clearance; Type 2 portable 12 in for <=3-day stationary or progressive work; multilane…
• MAINTENANCE SIGN CLASS (EPG 616.27): MoDOT maintenance TTC uses MGS roll-up signs rather than the contract Std Plan 616.10 panel layouts. The BOM carries sign codes only - no sign class, substrate or mounting - so a Missouri maintenance job is priced on the same sign lines as a contract job. Same…
• TEMPORARY PAVEMENT MARKING INTERVALS (EPG 616.27): 40 ft standard, 20 ft at intersections and transitions. The BOM carries no pavement-marking line item at all, so none of this is priced.
• DEVICE QUALITY STANDARDS as a placement requirement (Quality Standards for TTC Devices, April 2024, now EPG 616.24). A changeable message sign must be delineated by 5 channelizers forming a 100-ft taper, unless the CMS is more than 15 ft from the edge of shoulder, beyond the ditch line, or behind…
• TRAINING: contractor needs a certified Work Zone Specialist (Std Spec 2026 Sec 616.3.3, 4-yr recert) and flagger certification cards for flaggers and AFAD/PSFD/pilot operators (616.4.3, 4-yr); MoDOT Level 2/3 (EPG 616.25/616.26) is for MoDOT staff. No BOM quantity.
• Contract TAs are MUTCD 6P by reference (EPG 616.16.2); Std Plan 616.10BF is device details only (no TA layouts, freeway sheets or TMA thresholds). Std Plan 616.20E (pavement treatments, two-lane only, eff. 7/1/2025) differs: sign spacing 200/350/500/1000, buffer 250/360/495/730, tangent…
• All 54 federal TA figures are adopted by reference through EPG 616.16 (6P) with no figure redrawn. ta_overrides carries the WORK ZONE FINE option set, sequential warning lights and shift-spacing warnings only. dividedHighwayDuplication for ta-33 is inherited from federal Fig 6P-33 and is…
• Whether MoDOT design practice blocks a devices-only TA-11 posture (as Indiana does) or permits it is unconfirmed. The default here is 'permit', per the federal posture.
• St. Louis City and Kansas City local TTC supplements were not researched. A Missouri job inside either city may be governed by a local supplement this file does not carry.
• Tables 616.2.4, 616.2.6, 616.2.8.1 and 616.2.8.2 read at EPG 616.2 oldid 58006 (12 Jan 2026); values match federal except the urban speed break (35/40), the ~10 ft shift-taper spacing (EPG 616.2.8.2) and the single 100-ft downstream taper length (Table 616.2.8.1).
• SEQUENTIAL WARNING LIGHTS AND DIBs (EPG 616.11.1, 616.11.8, Std Spec 2026 Sec 616.5.2.3): priced. Night freeway TA-33 / TA-30R adds one sequential light per merging-taper device (road type freeway stands in for interstate; there is no interstate input). Jobs of 4+ days price the merging taper in…
• DEFAULT SHOULDER WIDTH (unverifiable): shoulder_width_ft stays 8. No MoDOT contract source sets a default; the only figure found is internal EPG Table 616.16.3.4 note 4 'Based on 10 ft. shoulder width' (MoDOT forces only, oldid 58632). At 10 ft the optional TA-33 shoulder taper would be 183 vs 147…

• L: MDT DD 618-21 (p.14) / 618-22 / 618-23: '960' PLASTIC DRUMS TAPER (LENGTH ASSUMES AN 80 M.P.H. APPROACH SPEED)', drawn on every divided four-lane sheet; 618-M3 note 2: 'Ensure taper is at least 960''. Rural and interstate sheets only; urban multi-lane sheets 618-U20/U30/U40 print L = 125/245/540 at 25/35/45 mph (Table 6B-4).
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MDT DD 618-U15 (p.35) note 4, 618-U20 (p.37), 618-U40 (p.41) note 5: shoulder taper '1/3 L', L from the 12-ft table; 'may be omitted if paved shoulder is less than 8''. Divided: 618-M3 (p.29) note 1 'USE A MINIMUM 320' SHOULDER TAPER' (= 960/3, via the TA-33 flat rule).
• buffer: MUTCD Table 6B-2 (Option, 6B.06 para 11)
• sign_spacing: MUTCD Table 6B-1 row 'rural'
• taper_spacing: MUTCD 6K.01 para 04; departure 20 ft and buffer at G: MDT DD 618-U01/U15/U20/U40 (p.31/35/37/41)
• tangent_spacing: MUTCD 6K.01 para 04; departure 20 ft and buffer at G: MDT DD 618-U01/U15/U20/U40 (p.31/35/37/41)
• departure_spacing: MUTCD 6K.01 para 04; departure 20 ft and buffer at G: MDT DD 618-U01/U15/U20/U40 (p.31/35/37/41)
• buffer_tangent_spacing: MUTCD 6K.01 para 04; departure 20 ft and buffer at G: MDT DD 618-U01/U15/U20/U40 (p.31/35/37/41)

ta-10, ta-30, ta-30r, ta-33

• Device class by run: MDT draws plastic drums in tapers and flexible guide posts on tangent and work-area runs (DD 618-00 note 1; 618-U20 legend). Priced that way. Downstream tapers are drums on 618-12, 618-U01 and 618-21; urban multi-lane 618-U20/U30 draw them as flexible guide posts.
• Type III barricade B(III) on urban TA-30R (1) and TA-30 (2) is priced from DD 618-U20 / 618-U30. Rural and divided sheets draw B(III) at other positions; those are not priced.
• R2-15* / G20-2 on rural TA-10 and on TA-33 come from project-wide layouts (DD 618-20, 618-04) and the MDT-forces guideline (618-M3, 618-M1), not the work-area sheets, so they are not required per closure. Rural TA-10 R2-15 is option 'mt_project_signing'. Urban sheets (618-U01, U20, U30) draw R2-15…
• UNVERIFIABLE: advance sign spacing on rural two-lane and freeway. MDT publishes no A/B/C table for these classes. 618-M1 uses 500 ft between every sign; 618-M3 puts W4-2R 940 ft ahead of the taper, then 800/800/800/900/900 ft interleaved with R2-1, W3-5, R2-15; contract sheet 618-21 draws other…
• MT-unique sign assets: R2-15*, R2-4D*, W23-2* ('* denotes signs unique to Montana', DD 618 sheets). R2-4D (end of speed zone past the work area) is not emitted.
• TA-10 buffer 100 ft is flat; MDT allows it longer on downgrades (DD 618-12 note 3). Not an input here.
• Urban TA-30R (DD 618-U20) also draws W20-1 and G20-2 for opposing traffic; the single-direction template does not emit them.
• DD 618-21 draws 2,250 ft of guide-post tangent between the end of the 960-ft taper and BEGIN WORK AREA; the engine uses a Table 6B-2 buffer. About +15 devices if adopted. Unconfirmed with MDT.
• Night flagging accessories (MDT Std Spec 2026 §618.03.14.A.1 balloon lights at each flagger station; A.4 LED-lit W20-7a): not priced. The A.5 temporary portable rumble strips (3 at each W3-4) are priced on night TA-10.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: NDOT Std Plan 920-R7 sh2 (p.131): shoulder taper 1/3 L minimum (Guidance 'about one-third L'); L comes from the lane-width table (10/11/12 ft, no shoulder column). Std Plan 926 sh1 (p.141) draws 'SHOULDER TAPER 1/3 L, PLASTIC DRUMS AT S SPACING' beside the 12-ft lane taper. Interpretation: L read at 12 ft.
• buffer: MUTCD Table 6B-2 (Option, MUTCD 6B.06 para 09-11 (11th Ed numbering))
• sign_spacing: MUTCD Table 6B-1 row 'rural'; nebraska override (A 500->1000, B 500->1600, C 500->7960) per NDOT Std Plan 926 sh1 (p.141): W4-2 at 1000 ft, W20-5 1/2 MILE at 2600 ft, W20-5 1 MILE, W20-1G 2 MILES (~10560 ft); note 12 low-volume reduction to 1500 ft / 1/2 mi / 1 mi at the Engineer's direction
• taper_spacing: NDOT Std Plan 920-R7 sheet 2 of 3 (p.131): taper spacing S, tangent spacing 2S (926 sh1: 'plastic drums at S spacing' in tapers, 'drums or 42" cones at 2S spacing' in tangent). Departure: 920-R7 sh2 'Downstream Tapers' (Guidance): 'minimum length of about 100 feet per lane, with devices spaced about 20 feet apart'.
• tangent_spacing: NDOT Std Plan 920-R7 sheet 2 of 3 (p.131): taper spacing S, tangent spacing 2S (926 sh1: 'plastic drums at S spacing' in tapers, 'drums or 42" cones at 2S spacing' in tangent). Departure: 920-R7 sh2 'Downstream Tapers' (Guidance): 'minimum length of about 100 feet per lane, with devices spaced about 20 feet apart'.
• departure_spacing: NDOT Std Plan 920-R7 sheet 2 of 3 (p.131): taper spacing S, tangent spacing 2S (926 sh1: 'plastic drums at S spacing' in tapers, 'drums or 42" cones at 2S spacing' in tangent). Departure: 920-R7 sh2 'Downstream Tapers' (Guidance): 'minimum length of about 100 feet per lane, with devices spaced about 20 feet apart'.
• buffer_tangent_spacing: NDOT Std Plan 920-R7 sheet 2 of 3 (p.131): taper spacing S, tangent spacing 2S (926 sh1: 'plastic drums at S spacing' in tapers, 'drums or 42" cones at 2S spacing' in tangent). Departure: 920-R7 sh2 'Downstream Tapers' (Guidance): 'minimum length of about 100 feet per lane, with devices spaced about 20 feet apart'.

ta-10, ta-30, ta-30r, ta-33

• Flagging shall be performed only by certified flaggers carrying a valid Flagger Certification Card, except in an emergency or for work not expected to last over 15 minutes (NDOT 2017 Std Specs §422.03.12.b; 920-R7 sh2 'Flaggers'). Certification is the 45-minute 'The Flagger' video plus an 80% exam…
• Operational duties from NDOT 2017 Std Spec §422: daily device inspection (§422.03.1.e(2)); response within 4 hours of a deficiency notice or no device payment for that day (§422.03.1.f); hard covers on out-of-use signs, same size, at least 1/8 in (3 mm) spacer, not bolted through (§422.02.5); a…
• Nebraska construction-sign SIZE matrix: the Standard Highway Signs section dimensions the federal W-series across five Nebraska classes (Single-Lane Conventional / Multi-Lane Conventional / Freeway / Minimum / Oversized) — e.g. W20-7 Flagger is 36x36 conventional, 48x48 freeway, 30x30 minimum,…
• Figure 6P.01, the single Nebraska-original TA ('Typical Traffic Control on Non-Highway Road Closed to Traffic', 2025 Supplement). It codifies sign selection (R11-2, R11-2A, R11-3A, R11-4, R1-1, W20-3A/3B/3C, W40-11) and Type III barricades, with no taper, buffer, spacing or A/B/C dimensions. It is…
• No Nebraska positive-control mandate was found for TA-11 (low-volume two-lane closure), so devices-only is assumed permitted. If a plan sheet blocks it, ta-11 jobs would need flaggers this estimate does not carry.
• City overlays are not asserted. Omaha publishes its own Public Works Traffic Barricade Manual (March 2022): a city Traffic Control Manager certification (ATSSA or Nebraska LTAP training passed within 4 years) for anyone designing TTC inside the city, a three-type barricade taxonomy (Deformable…
• NDOT Std Plan 926 sheet 1 note 10 (p.141): one plastic drum or Type III barricade in the centre of the closed lane about every 1/4 mile, as directed by the Engineer. Priced on TA-33 at 50 mph and up as floor(zone/1320) drums; not priced on TA-30R.
• The NDOT 926 set is priced on TA-33 at 50 mph and up only. Below 50 mph the 926 additions are not applied: urban 924-R4 sh1 'Lane Closed Near Intersection' (p.138) draws one W20-5, no Type III barricade, no existing-speed R2-1 and no shoulder taper. If 926 governs a TA-30R closure, it adds a…
• Device class: NDOT requires drums in tapers and allows drums or 42-in cones in the tangent (920-R7 sh1; 926 notes 6-7). Drum is priced throughout; a 42-in cone tangent would be cheaper.
• NDOT 920-R7 sh3 note G (p.132): double fines (R41-17B) and reduced-speed signing are not required for short-duration work under 12 h. Sign rows cannot gate on duration, so R41-17B is always emitted on TA-10, TA-30, TA-30R and TA-33; urban jobs carry it per 924-R4 sh1 Typical Advanced Signing.
• NDOT reduced work-zone speed signing (R2-1/R2-1WZ at the reduced limit at 500 ft and W3-5 at 1600 ft on 926; 921-R8 note 20) is posted only when a speed reduction is authorized. No input carries that, so none are emitted (+4 to +6 signs on a reduced-speed TA-33). The existing-speed R2-1/R2-1WZ…
• Nebraska sets no interstate/freeway design-speed floor for the merging taper. The taper is computed on posted speed, so a 55-mph-posted Nebraska interstate taper is 12 x 55 = 660 ft, not 840.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: NDOT SSTC Design Guide Table 6-4 (NDOT SSTC Design Guide Table 6-4, p.6-9 (PDF p.107))
• sign_spacing: NDOT SSTC Design Guide Table 6-2 (on federal 6B-1 base, all cells overridden) row 'rural'; nevada override (A 500->1000, B 500->1600, C 500->2640) per NDOT Table 6-2: 55-80 mph row; 51-54 mph read up to the next printed row
• taper_spacing: NDOT Signing, Striping, and Traffic Control Design Guide (December 2022, 1st Ed), Section 6 Table 6-3, p.6-8 (PDF p.106): one column, 'Taper and Channelization Device Spacing (ft)' = S at every speed (20 at 20 mph ... 80 at 80). Body text calls the table 'NDOT's required merging taper length and channelizing device spacing'. Departure: §6.4.3 Termination Area, p.6-9 (PDF p.107), Guidance…
• tangent_spacing: NDOT Signing, Striping, and Traffic Control Design Guide (December 2022, 1st Ed), Section 6 Table 6-3, p.6-8 (PDF p.106): one column, 'Taper and Channelization Device Spacing (ft)' = S at every speed (20 at 20 mph ... 80 at 80). Body text calls the table 'NDOT's required merging taper length and channelizing device spacing'. Departure: §6.4.3 Termination Area, p.6-9 (PDF p.107), Guidance…
• departure_spacing: NDOT Signing, Striping, and Traffic Control Design Guide (December 2022, 1st Ed), Section 6 Table 6-3, p.6-8 (PDF p.106): one column, 'Taper and Channelization Device Spacing (ft)' = S at every speed (20 at 20 mph ... 80 at 80). Body text calls the table 'NDOT's required merging taper length and channelizing device spacing'. Departure: §6.4.3 Termination Area, p.6-9 (PDF p.107), Guidance…
• buffer_tangent_spacing: NDOT Signing, Striping, and Traffic Control Design Guide (December 2022, 1st Ed), Section 6 Table 6-3, p.6-8 (PDF p.106): one column, 'Taper and Channelization Device Spacing (ft)' = S at every speed (20 at 20 mph ... 80 at 80). Body text calls the table 'NDOT's required merging taper length and channelizing device spacing'. Departure: §6.4.3 Termination Area, p.6-9 (PDF p.107), Guidance…

ta-10, ta-30, ta-30r, ta-33

• §624.03.01: one-way traffic operation SHALL NOT exceed 1,800 m (6,000 ft) unless otherwise approved in writing by the Department. The estimator accepts any --zone-length and applies no cap, so a TA-10 job entered at, say, 8,000 ft returns a device count for a layout Nevada does not permit without…
• §624.03.01: on mobile and shift operations, tapers SHALL be moved ahead so the lag behind work activities does not exceed 1.6 km (1 mi). This estimator prices stationary operations only, so it never applies, but a mobile Nevada job would need repeated taper relocation the BOM does not price.
• §624.03.01: during non-working hours a traffic cone SHALL be placed immediately in front of any construction sign standing within 3 m (10 ft) of the travelway. On any Nevada job left up overnight that is roughly one extra cone per advance-warning sign — for a three-sign approach, six cones on a…
• §624.03.01: existing posted speed limits SHALL remain in effect unless the Department gives written approval, and speed-reduction signs SHALL be adjusted with the work. The estimator takes the posted speed as given and never models a reduced work-zone speed, so it cannot flag a plan that assumes…
• §624.03.03: flaggers SHALL hold a valid flagger card from an approved instructional course and be at least 18; pilot-car drivers SHALL hold a valid flagging card (§624.03.04). A Traffic Control Supervisor with worksite-traffic-control certification is required whenever a TCS pay item appears in…
• §624.03.03: apparel and paddle specs — Vest Pattern 3 / Performance Class 2 by day, Class 3 at night, manufacturer certificates of compliance; STOP/SLOW paddle 18 in wide with 6 in series-C letters on a rigid ~5 ft handle; flagger stations adequately illuminated at night with Engineer-approved…
• §625.02.07: Nevada catalogs a portable beacon-light one-way-control system (clear strobe + 8 in red stop light + 8 in yellow caution light, visible >= 100 ft, 12-V, ~10 ft mast, QPL-listed) as an alternative to a flagger on one-lane two-way control. The estimator has no such device and always…
• §625.02.02-.07: an NDOT Qualified Products List gate binds changeable message signs, temporary impact attenuators, truck-mounted attenuators, water-filled barrier, portable precast barrier, portable beacon-light systems and reflective markers. The estimator prices generic devices with no QPL…
• §625.02.01: arrow boards used at night SHALL carry a photoelectric sensor for automatic lamp dimming. That is a spec on the arrow board unit, not a count, so it changes unit cost rather than quantity.
• §625.03.01: sign covers SHALL completely block the message day or night, with no burlap or fabric and no adhesive tape on the sign face. Covers are not emitted as a line item on phased Nevada jobs.
• dividedHighwayDuplication for TA-33 is unverified. It lives on NDOT 2024 Standard Plans TC-2..TC-20 (public at dot.nv.gov showpublisheddocument/23088), which were not read. Not set, so the template ships the duplicated count: 6 advance signs, 8 with --include-optional. If NDOT signs one side, it…
• shoulder_width_ft is 8, the engine default carried from federal.json, NOT an NDOT value — Nevada publishes no shoulder-width default. Any shoulder-taper number this overlay produces is federal geometry at an assumed width.
• The NDOT Sign Supplement (Nevada-specific panel designs) was not acquired. Federal construction-series codes are assumed to stand; the DOUBLE PENALTIES and END WORK ZONE panel codes are descriptive.
• Las Vegas and Reno municipal overlays are not modelled. Only a one-page Las Vegas TTC quick-reference was acquired; the full municipal handbooks were not. A job inside either city may be governed by a local regime this overlay does not see.
• NRS 484B.130(3) work-zone signing (DOUBLE PENALTIES IN WORK ZONES, BEGIN WORK ZONE, END WORK ZONE) is priced on TA-10, TA-30, TA-30R and TA-33, one per direction of travel, not duplicated on the median. RTC of Southern Nevada DWG 627 adds END DOUBLE PENALTIES panels in Clark County; that regional…
• Tangent spacing option: NDOT Table 6-3 footnote * lets rural interstate channelization at 55+ mph (except tapers) widen to 80 ft, with three drums placed diagonally at half-mile increments. It is an option, so tangents are priced at S. TA-33 at 65 mph / 2000 ft would drop from 43 to 35 tangent…
• TMA / shadow vehicle: unverified. §625.02.05 (2014 Std Spec) is a TMA product spec (arrow board with each TMA; QPL); no condition requiring a TMA was found in the spec or the design guide. Requirements would sit on NDOT 2024 Standard Plans TC-2..TC-20, which were not read. Template defaults kept.
• Std Spec §625.03.01 requires devices per the Nevada Work Zone Traffic Control Handbook. It was not acquired. It may carry sign or device detail this overlay does not model.
• Speeds above 80 mph are not legal in Nevada (NRS 484B.600(1)(e)); the engine does not reject them and falls back to the 80-mph rows or federal values.

• L: MUTCD Table 6B-4
• L_half: NHDOT TC-6 Lane Shifts - Divided Highways (rev 04/20/2022; reissued 7/27/2026): every lane-shift taper dimensioned 'L MIN.' at all speeds.
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MUTCD Table 6B-2 (Option — no NH mandatory-buffer flip on interstate or freeway, and no NH absolute floor.)
• sign_spacing: MUTCD Table 6B-1 row 'rural'
• taper_spacing: Defers to federal 6K.01 para 04. Departure ~20 ft per the MUTCD downstream-taper Guidance (6B.08): 50-100 ft with devices about 20 ft apart.
• tangent_spacing: Defers to federal 6K.01 para 04. Departure ~20 ft per the MUTCD downstream-taper Guidance (6B.08): 50-100 ft with devices about 20 ft apart.
• departure_spacing: Defers to federal 6K.01 para 04. Departure ~20 ft per the MUTCD downstream-taper Guidance (6B.08): 50-100 ft with devices about 20 ft apart.
• buffer_tangent_spacing: Defers to federal 6K.01 para 04. Departure ~20 ft per the MUTCD downstream-taper Guidance (6B.08): 50-100 ft with devices about 20 ft apart.

• drum when {"divided": true}

ta-10, ta-30, ta-30r, ta-33

• TC-7's barrier taper rate (Portable Concrete Barrier standard; GR-24/GR-25 12.5-ft MASH are current, GR-23 withdrawn after 12/31/2019) is separate from the lane-shift taper and is not modelled.
• NH's amendments are process as well as geometry - §619 advance-notification requirements and flagger credentialing. Neither produces a BOM line.
• NHDOT TC-1 Amend. 5 (6K.04): tubular markers shall be >= 42 in x 3 in. The engine has no tubular class, so it cannot price one.
• NHDOT TC-1 Amend. 9: R9-20 on all approaches when lane+shoulder < 14 ft and speed <= 40 mph (Guidance). The engine has no lane+shoulder width input, so it is not added.
• Open: the 2026 TC-4/TC-9 Note 4 may move the full-L shift-taper break from >50 to >=45 mph (unconfirmed). The 2022 >50 mph break is kept.
• Shoulder taper, unverifiable: TC-4 and TC-6 (2026) dimension '1/3 L MIN.' but do not say whether L is taken at the shoulder width or a 12-ft lane. width_keyed is kept; at 55 mph the 12-ft reading is 220 ft vs 147 ft, about 1-2 devices.
• Open: the 2026 TC-4 may label tangents 4S (2022 printed 2S; unconfirmed). 2*S is kept. If 4S, the TA-33 55 mph 2,000-ft line falls from 36 to about 24.
• TA-10, unverifiable: NHDOT publishes no flagging typical application and TC-1 (2026) does not amend 6P-10 or the W20-4 / W3-4 signing. The federal figure stands, with the 100-ft maximum one-lane two-way taper (Table 6B-3 minimum is 50 ft, about 4 fewer devices).
• Open: the 2026 TC-1 amendment number for the cone night rule has not been re-read.
• R50-1 (NH work-zone speeding fines, RSA 256:107-a; SG-5, TC-3) is posted on construction projects where required. It is project signing, not part of a short-term TA, so it is not priced.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MUTCD Table 6B-2 (Drawn (dimensioned, not optional) on NMDOT Std Drawings 702-05-1/1 and 702-04-1/2)
• sign_spacing: MUTCD Table 6B-1 (NMDOT 702-05-1/1 Table 1 equivalent) row 'rural'
• taper_spacing: NMDOT Std Drawing 702-05-1/1 (12/11/2019, eff. Jan 2020, in June 2026 Letting set, PDF p.398) Table 2: taper drum spacing S, buffer drum spacing 2S; callout 'MAX. DRUM SPACING AT 2.0X POSTED SPEED'. Same as MUTCD 6K.01 para 04. No departure column; departure 20 ft per the MUTCD downstream-taper Guidance (6B.08), which NM adopts.
• tangent_spacing: NMDOT Std Drawing 702-05-1/1 (12/11/2019, eff. Jan 2020, in June 2026 Letting set, PDF p.398) Table 2: taper drum spacing S, buffer drum spacing 2S; callout 'MAX. DRUM SPACING AT 2.0X POSTED SPEED'. Same as MUTCD 6K.01 para 04. No departure column; departure 20 ft per the MUTCD downstream-taper Guidance (6B.08), which NM adopts.
• departure_spacing: NMDOT Std Drawing 702-05-1/1 (12/11/2019, eff. Jan 2020, in June 2026 Letting set, PDF p.398) Table 2: taper drum spacing S, buffer drum spacing 2S; callout 'MAX. DRUM SPACING AT 2.0X POSTED SPEED'. Same as MUTCD 6K.01 para 04. No departure column; departure 20 ft per the MUTCD downstream-taper Guidance (6B.08), which NM adopts.
• buffer_tangent_spacing: NMDOT Std Drawing 702-05-1/1 (12/11/2019, eff. Jan 2020, in June 2026 Letting set, PDF p.398) Table 2: taper drum spacing S, buffer drum spacing 2S; callout 'MAX. DRUM SPACING AT 2.0X POSTED SPEED'. Same as MUTCD 6K.01 para 04. No departure column; departure 20 ft per the MUTCD downstream-taper Guidance (6B.08), which NM adopts.

• drum when {"night": true}

ta-10, ta-30, ta-30r, ta-33

• New Mexico is NOT a pure defer-to-federal state. The NMDOT Standard Drawings (June 2026 Letting set) confirm federal taper, buffer and S/2S spacing numbers, but 702-05-1/1 adds a 5-station speed-reduction sign train with required END ROAD WORK on TA-33, and draws divided closures in drums (priced…
• Traffic Control Supervisor. A certified TCS (ATSSA, ACNM, or a Department-accepted agency; re-certified every 4 years per Std Spec 618.2.1.1) is the contract default wherever Section 618 Traffic Control Management is a contract item, supervising on a 24-hour basis throughout the Project…
• Flagger certification. NM requires a Flagger Training certificate (ATSSA/ACNM wallet card) in the field before flagger control work, plus refresher training (Std Spec 618.2.1). The engine counts flagger HEADS (TA-10 returns 2) but carries no certification attribute or cost premium, so a…
• Traffic Control Diary. The contractor maintains a diary recording devices and deliveries (Std Spec 618). A paperwork deliverable with no line item; nighttime inspection at least weekly once devices are in use more than 7 days (618.2.2.2) is likewise unpriced.
• Device materials. NMDOT specifies retroreflective sheeting type and extruded/aluminum panel borders and corner radii by sign height (1-1/8 in / 2 in / 3 in borders, 6/9/12 in radii) at Std Spec 701.2.4, incorporated into construction devices by 702.2.1. The estimator prices a generic sign, so the…
• The -NM- sign catalog. NM sign codes match the national MUTCD UNLESS the code contains '-NM-', which marks a state-specific sign with its own stock number, size and legend (NMDOT Sign Code Listing 2005). That listing is not on disk, so no ta_overrides.code_map is written. If a Part 6 -NM- variant…
• Standard Drawings are public (June 2026 Letting set). 702-05-1/1 confirms S taper / 2S buffer and work-space drum spacing. No NM flagging (TA-10) sheet exists: 702-11 was deleted Jan 2020.
• The 2005 Sign Code Listing and NMDOT Design Manual Ch. 910 (Signing & Pavement Markings) are both unacquired. Ch. 910 is expected to reference the MUTCD with no Part 6 numeric delta, but that is an expectation, not a verified reading.
• Std Spec 618.2.4 Signal Coordination and Operation requires PE-stamped alternate traffic-signal-timing plans within the work zone and along detour routes for long-term closures lasting more than 5 calendar days. Signal timing, not signing, and not a materials line - the estimator emits nothing for…
• Edition is provisional. NM adopts 'latest edition' and is modelled here against federal 11th Ed (2023). If FHWA issues a 12th Edition, NM's numbers move on the federal publication date with no NM action, and this overlay would be silently stale.
• Departure (downstream) taper spacing is the federal ~20 ft (MUTCD 6B.08 Guidance), which NM adopts; 702-05-1/1 prints no departure column.
• Whether NMDOT permits the federal devices-only TA-11 as drawn is unconfirmed; no NMDOT positive-control block was found (contrast Indiana). ta-11 runs on federal values.
• TPRS (NMDOT SSP Modifying §702, 5/14/24, §702.2.6, §702.3.1.3, Table 702.3.1.3:1): TPRS SHALL be installed on intermediate and long-term stationary operations when crews are present and in advance of horizontal curves; MAY on short-term lane closures, shoulder work, flagging and one-lane two-way…
• §702.3.1 (Standard): Type A or B flashing warning lights and flags are required to call attention to advance warning construction signing. Priced as one SIGN_LIGHT and two SIGN_FLAG per W-series sign (flag pair is a house convention; §702.3.1 sets no count). On TA-33 the 2 advance R2-1 stations…
• Project-limit signing (Std Drawings 702-03-3/4, 702-03-4/4, eff. March 2020): BOP/EOP ROAD WORK NEXT XX MILES / END ROAD WORK plus NMDOT project panels (SP-1/SP-2/SP-3), once per project, not per TA; both sides on Interstates and 4-lane divided, right side only on 2-lane.
• UNVERIFIED - shifting and shoulder tapers: no live NM sheet or spec clause sets them; 702-05-1/1 prints only the merging-taper column. Kept at federal L/2 and 1/3 L at an 8-ft shoulder; no NM source gives the 8-ft default shoulder.
• UNVERIFIED - TA-10 flagging: no NM flagging drawing is in force (702-11-1/2 and 2/2 deleted effective January 2020, no replacement in the June 2026 index; §618.2.1 requires flagger certification only). Tapers, sign set (W20-4 vs W3-4) and flagger count stay federal Fig 6P-10 / 6B.08.
• UNVERIFIED - TA-30R / TA-30: no live NMDOT sheet covers an undivided multi-lane lane closure (702-05-1/1 is 'for Divided Interstates & Non-Interstates'). Sign sets stay federal / app convention.
• UNVERIFIED - NMAC 18.31.6.7(BH) 'latest edition' text and the 2005 -NM- Sign Code Listing were not retrieved in the 2026-09-23 re-check; the adoption fact rests on Std Spec 'MUTCD, current edition' and the FHWA state map.
• Night drums carry Type C steady-burn lights (Std Spec 2019 §702.3.1): one per drum on night runs. Not emitted.
• Open: whether the 702-05-1/1 speed-reduction train (W3-5a x2, R2-1 x4) applies to a TA-33 closure posted below 45 mph. The sheet is titled for Divided Interstates & Non-Interstates and sets no speed floor; it is priced at every speed.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: NDDOT TCR 2025 p.16: shoulder taper 0.33 L with W = shoulder width + 2 ft (8-ft shoulder + 2 ft = 10 ft); 1/3 x 10/12 = 0.2778 of the 12-ft L. p.17 10-ft Shoulder Taper (0.33L) column prints these values rounded to 5 ft (55 mph = 185; computed 183). Keyed to the 10-ft column; a supplied --shoulder-width does not change it.
• buffer: MUTCD Table 6B-2 (Option (TCR 2025 p.15 'Longitudinal Buffer Space (optional)'))
• sign_spacing: NDDOT TCR 2025 multi-lane A/B/C table row 'rural'; north-dakota override (A 500->750, B 500->1000, C 500->1500) per NDDOT TCR 2025 Fig 13 table p.44: Urban Expressway/Freeway (60 mph or less)
• taper_spacing: NDDOT TCR 2025 p.18 'Cones' (Standard): taper spacing a maximum of S ft, channelization a maximum of 2S; p.14 'Max spacing = S / 2S'. Downstream and one-lane two-way tapers: p.16 '100 ft taper = 5 cones spaced 20 ft apart'.
• tangent_spacing: NDDOT TCR 2025 p.18 'Cones' (Standard): taper spacing a maximum of S ft, channelization a maximum of 2S; p.14 'Max spacing = S / 2S'. Downstream and one-lane two-way tapers: p.16 '100 ft taper = 5 cones spaced 20 ft apart'.
• departure_spacing: NDDOT TCR 2025 p.18 'Cones' (Standard): taper spacing a maximum of S ft, channelization a maximum of 2S; p.14 'Max spacing = S / 2S'. Downstream and one-lane two-way tapers: p.16 '100 ft taper = 5 cones spaced 20 ft apart'.
• buffer_tangent_spacing: NDDOT TCR 2025 p.18 'Cones' (Standard): taper spacing a maximum of S ft, channelization a maximum of 2S; p.14 'Max spacing = S / 2S'. Downstream and one-lane two-way tapers: p.16 '100 ft taper = 5 cones spaced 20 ft apart'.

ta-10, ta-30, ta-30r, ta-33

• Shoulder-closure drum spacing: NDDOT Std Drawing D-704-12 (08/01/24) spaces drums at 1/2 S on shoulder tapers. The optional TA-33 shoulder taper is priced at S spacing: 4 devices at 55 mph instead of 8.
• 150-ft TMA roll-ahead (TCR p.10)
• night flagger station illumination (TCR p.3; Spec 704.04 K.6)
• portable rumble strip arrays 10/15/20 ft (TCR p.12) - the RUMBLE STRIPS AHEAD signs are priced on TA-10 above 45 mph, the strip arrays (1 per approach) are not; the duration / scheduled-work condition is not an input
• pilot car + 2 flaggers (TCR p.11)
• reduced-speed signs Figs 9/12/14 incl. MINIMUM FEE $150 plate
• sign size 36 in 2-lane / 48 in 4+ lanes (TCR p.18)
• 5 drums at 5 ft at arrow panel (D-704-12)
• TA-30 (interior lane, multi-lane street): NDDOT TCR 2025 has no interior-lane or opposing-direction figure (Table of Figures p.V; Fig 13 is exterior-lane only; Intro p.3 refers uncovered situations to the MUTCD). TA-30 follows the federal figure. If Fig 13 applies by analogy: +2 G20-2, +1 TMA.

• L: MUTCD Table 6B-4
• L_half: Ohio Supp Tbl 6B-3 p.OH Part 6-6: 'L; however, may be at least 0.5 L when speed is less than 50 mph'; §6B.08 ¶08/¶08a (statewide)
• L_shoulder: ODOT SCD MT-95.30/31/32 rev 07-18-2025 sht P.1 Table II 'Shoulder Taper Rate Minimum' (4:1 at 25 mph, 5:1, 7:1, 9:1, 15:1, 17:1, 19:1, 20:1, 22:1, 24:1 at 70 mph) + sht P.3 Note 2B (shall): 'The minimum acceptable length for the shoulder taper shall be ... shoulder taper rate.' L_shoulder = shoulder width x rate: 8 ft at 55 mph = 152 ft. The Ohio Supp Tbl 6B-3 row [p.OH Part 6-6] reads 'at least…
• buffer: MUTCD Table 6B-2 (Option, MUTCD 6B.06 para 11 (11th Ed numbering; Ohio does not promote it))
• sign_spacing: MUTCD Table 6B-1 row 'rural'
• taper_spacing: MT-95.30/31/32 rev 07-18-2025 sht P.1 Tbl II: taper spacing = S ft. Tangent spacing is a step table: 40 ft at <=35 mph, 80 ft at 40-55 mph, 120 ft at 60-70 mph (MT-95.30, divided). Downstream taper devices about 20 ft apart (TEM 602-5.5: 'a downstream taper should have a minimum length of 50 feet and a maximum length of 100 feet, with devices spaced about 20 feet apart'; MT-97.10 sht P.1).
• tangent_spacing: MT-95.30/31/32 rev 07-18-2025 sht P.1 Tbl II: taper spacing = S ft. Tangent spacing is a step table: 40 ft at <=35 mph, 80 ft at 40-55 mph, 120 ft at 60-70 mph (MT-95.30, divided). Downstream taper devices about 20 ft apart (TEM 602-5.5: 'a downstream taper should have a minimum length of 50 feet and a maximum length of 100 feet, with devices spaced about 20 feet apart'; MT-97.10 sht P.1).
• departure_spacing: MT-95.30/31/32 rev 07-18-2025 sht P.1 Tbl II: taper spacing = S ft. Tangent spacing is a step table: 40 ft at <=35 mph, 80 ft at 40-55 mph, 120 ft at 60-70 mph (MT-95.30, divided). Downstream taper devices about 20 ft apart (TEM 602-5.5: 'a downstream taper should have a minimum length of 50 feet and a maximum length of 100 feet, with devices spaced about 20 feet apart'; MT-97.10 sht P.1).
• buffer_tangent_spacing: MT-95.30/31/32 rev 07-18-2025 sht P.1 Tbl II: taper spacing = S ft. Tangent spacing is a step table: 40 ft at <=35 mph, 80 ft at 40-55 mph, 120 ft at 60-70 mph (MT-95.30, divided). Downstream taper devices about 20 ft apart (TEM 602-5.5: 'a downstream taper should have a minimum length of 50 feet and a maximum length of 100 feet, with devices spaced about 20 feet apart'; MT-97.10 sht P.1).

• drum when {"night": true}
• drum when {"min_hours": 24, "tas": ["ta-33", "ta-30", "ta-30r"]}

ta-10, ta-30, ta-30r, ta-33

• TMA barrier condition. C&MS 614.03(D) requires a TMA on a multi-lane highway at 45 mph and above in a closed lane or shoulder without portable or permanent barrier. Encoded as required at 45+ mph on ta-33 / ta-30 and ta-30r. The estimator takes no barrier input, so a barrier-protected job still…
• TMA count per work area. C&MS 614.03(D): 'Furnish a TMA for each work area if two or more localized work areas occur within the same stationary work zone and are separated by more than 700 feet.' The estimator models one contiguous work zone, so it never adds the second or third TMA.
• TMA roll-ahead spacing. C&MS Table 614.03-1 sets the shadow-vehicle-to-work-area distance by speed and shadow-vehicle weight class (150/100/74 ft stationary at 22,000 lb and above; 172/123/100 ft at 9,900-22,000 lb). A placement dimension; no BOM line changes.
• Night cones beyond the taper. The night gate prices every run as drums (conservative). Ohio allows night cones beyond the transition taper at 40 ft max and 42 in min (TEM 605-11.2, 605-11.3; MT-95.3x Note 13B(c),(e)). That cheaper mix is not modelled.
• TA-10 closure-length cap. MT-97.10 sht P.2 Note 2: 'the closure shall not be more than 2000' long unless approved by the Engineer. The minimum length between closures shall be 2000'. Only one side of the road shall be closed in any one work zone.' A TA-10 zone over 2,000 ft needs the Engineer's…
• downstream_taper_ft carries one number where Ohio publishes a range. Ohio Supp Tbl 6B-3, TEM 602-5.5 and MT-95.30/31/32 sht P.1 all say 50 ft min / 100 ft max. 100 ft is taken (the published max). At the 50-ft min the departure taper falls from 6 devices to 4 at 20-ft spacing. MT-95.30/31/32 draw…
• R11-H5a higher-fines sign: entrance-ramp repeats (TEM 605-4.2) are not counted; ramps are not an input. The mainline signs are priced on TA-33 for work of 30 days or more over 0.50 mile.
• Work Zone Speed Zone. TEM Part 12 1203-2.9.1 triggers a WZSZ on a multi-lane highway with a pre-construction limit of 55 mph or more, a condition at least 0.5 mile long that reduces lane or shoulder functionality, and an expected duration of at least three hours. That adds the DSL sign assembly…
• Temporary portable rumble strips. MT-97.20 Note 2 permits them only on a two-lane facility, short-term stationary, with crews in the traveled way and a one-lane two-way pattern running; Note 3 excludes wet, icy, chip-seal and rutted surfaces. Where they apply, Note 7 adds two arrays of three 11-ft…
• MT-95.50 queue-management advance signing. Note 3A adds Extra Advance Warning Sign Groups of W20-1 + W20-5 + W3-H4b plus distance plaques; TEM 641-5.2 places the first group a whole number of miles upstream equal to the longest anticipated queue, then repeats at 1-2 mile intervals. Queue length is…
• Long-zone overlays. TEM 607-4 adds a double-yellow No-Passing Zone of length A on the closed-lane approach in long-term TA-11 operations (pavement marking). Ohio Supp 6H.38 para 06a adds the W8-H12a NO EDGE LINES sign wherever work obliterates the edge line, repeated every 2 miles.
• M4-H9 (L/R), Ohio's DETOUR-with-advance-arrow code, added to the SDMM on 2026-01-16 [TEM Part 6 607-7]. The federal figures call for 'M4-9 (modified)'. Its panel dimensions are not in the compiled 2021 SDMM, so no code_map entry is written.
• MT-series sign sequences are not transcribed in full. MT-95.31/32 sht P.1 adds an optional W13-1P-24 advisory-speed plaque under the W20-5 and places G20-2-48 a distance A past the downstream taper; MT-97.10 defaults every W-series diamond to 48 in, 36 in only when the approach speed limit is 40…
• Work-zone clear zone E, MT-95.30/31/32 sht P.1 Tbl II: 15 ft at 40 mph and below, 19 ft at 45-50, 23 ft at 55, 30 ft at 60-70 on divided highways. It decides whether a work area needs channelization or barrier at all; not represented.
• Shifting taper on ODOT-administered work: TEM 602-5.3 requires L for every shift taper on freeways, expressways and multi-lane highways regardless of speed. The statewide rule is encoded; the ODOT-work rule only warns. TEM 602-5.7 extends it to lane-width transitions, which no template draws.
• MT-97.10 sht P.2 Note 8D (shall): a minimum of two drums close the paved shoulder on TA-10. Not counted: +2 devices where a paved shoulder exists.
• MT-97.10 draws its own 100' post-work run '(optional)', so it is not added on TA-10. The TA-33/30R 100-ft post-work run is added.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: MUTCD 6B.08: shoulder taper = 1/3 L at the shoulder width
• buffer: MUTCD Table 6B-2 (Option/should, MUTCD 11th Ed 6B.06 para 11)
• sign_spacing: MUTCD Table 6B-1 row 'rural'
• taper_spacing: ODOT T-502 / TCS2-1 rev 00 (5/23/2010), 'Spacing Channelizing Devices (MAXIMUM)': taper = S through 45 mph, flat 50 ft at 50-75 mph; tangent = 2S through 45 mph, flat 100 ft at 50-75 mph. T-502 is the contract standard sheet and supersedes the uncapped S/2S in Guidelines for TTC Table 2/3 (2008). Departure/downstream taper devices at approximately 20 ft (ODOT Guidelines §Tapers 'Downstream…
• tangent_spacing: ODOT T-502 / TCS2-1 rev 00 (5/23/2010), 'Spacing Channelizing Devices (MAXIMUM)': taper = S through 45 mph, flat 50 ft at 50-75 mph; tangent = 2S through 45 mph, flat 100 ft at 50-75 mph. T-502 is the contract standard sheet and supersedes the uncapped S/2S in Guidelines for TTC Table 2/3 (2008). Departure/downstream taper devices at approximately 20 ft (ODOT Guidelines §Tapers 'Downstream…
• departure_spacing: ODOT T-502 / TCS2-1 rev 00 (5/23/2010), 'Spacing Channelizing Devices (MAXIMUM)': taper = S through 45 mph, flat 50 ft at 50-75 mph; tangent = 2S through 45 mph, flat 100 ft at 50-75 mph. T-502 is the contract standard sheet and supersedes the uncapped S/2S in Guidelines for TTC Table 2/3 (2008). Departure/downstream taper devices at approximately 20 ft (ODOT Guidelines §Tapers 'Downstream…
• buffer_tangent_spacing: ODOT T-502 / TCS2-1 rev 00 (5/23/2010), 'Spacing Channelizing Devices (MAXIMUM)': taper = S through 45 mph, flat 50 ft at 50-75 mph; tangent = 2S through 45 mph, flat 100 ft at 50-75 mph. T-502 is the contract standard sheet and supersedes the uncapped S/2S in Guidelines for TTC Table 2/3 (2008). Departure/downstream taper devices at approximately 20 ft (ODOT Guidelines §Tapers 'Downstream…

ta-10, ta-30, ta-30r, ta-33

• Low-speed rural sign-spacing alternative: on lower-speed rural highways ODOT accepts a spacing of 8 to 12 times the speed limit in mph (ODOT Guidelines for TTC, note under Table 1). A 50 mph rural job prints the 500 ft rural row where ODOT would accept 400 to 600 ft. Sign counts do not move;…
• Downstream taper is 'approximately 100 feet per lane' in Oklahoma (ODOT Guidelines for TTC §Tapers; T-502 '100 feet per lane'). One lane is priced; a 2-lane closure runs 200 ft.
• Significant Project / TMP regime (ODOT 23 CFR 630 Subpart K Guidance 2026-01-21): an interstate-system project inside a designated TMA (greater OKC and Tulsa metro, plus Oklahoma, Canadian, Cleveland and Tulsa counties) occupying a location for 3 days or more is a Significant Project and requires…
• Positive protection: ODOT requires a Positive Protection Devices Checklist (Subpart K Guidance Appendix B) after the TMP/engineering study, and shadow vehicles with impact attenuators behind workers. Barrier is length-driven and is not priced.
• Crashworthiness: ODOT Quality Control Standards gate temporary device acceptance to NCHRP Report 350, while the Jan-2026 Subpart K guidance frames MASH acceptance forward. No quantity moves; a MASH-only rental fleet may not clear the ODOT QPL gate.
• Retroreflectivity: devices that are damaged or have lost significant retroreflectivity shall be replaced (ODOT Guidelines for TTC §Channelizing Devices). No replacement or attrition allowance is priced.
• TA-11: ODOT publishes no positive-control requirement for TA-11, so the federal devices-only low-volume treatment is priced as drawn.
• Table 1's rural and expressway-freeway rows are road class, not speed; Oklahoma publishes no speed key for them. The rural (50-55) and freeway (60-80) speed bands are an estimate; supply --road-type when the class is known.
• From ODOT T-501..T-507, not priced: T-501 wing barricade each side before the first advance sign; T-507 G20-1A on projects of 1 mile or more, and CS-14 + R2-1 every 1/2 mile; STAY ALERT and FINES DOUBLE panels. 2019 Std Spec 880.02: two flaggers per Flagger sign-day.
• Channelizer spacing across lane lines: T-501 / TCS1-1 rev 01 (3/21/2011) general notes say 'When channelizing devices are used to direct traffic across existing lane lines or edge lines, the spacing ... SHALL be reduced 50%.' Read literally this halves merging-taper spacing (25 ft at 55 mph), but…
• TA-30R: ODOT publishes no TA-30R equivalent (Guidelines for TTC pp.40-41). The federal sign set is kept (G20-2 optional). If the TA-33 treatment applies, +1 G20-2.

• L: MUTCD Table 6B-4
• L_half: MUTCD 6B.08: shifting taper = L/2
• L_shoulder: OTTCH Table 2-3 shoulder column (L/3, printed at a 10-ft shoulder per the Table 2-3 footnote: 'Shoulder taper length "L/3" are based on 10 foot shoulder widths'), 55 mph = 185 ft
• buffer: OTTCH Table 2-4 'Buffer' Space (Option — OTTCH 2.1: 'Buffer spaces should be provided when space is available, but are optional.' No Oregon buffer floor.)
• sign_spacing: OTTCH Table 2-4 row 'rural'
• taper_spacing: OTTCH 2026 2.3 p.16: taper spacing = S ft, tangent = 2S ft (same as MUTCD 6K.01). Downstream and one-lane two-way tapers: 20 ft, 4-6 cones.
• tangent_spacing: OTTCH 2026 2.3 p.16: taper spacing = S ft, tangent = 2S ft (same as MUTCD 6K.01). Downstream and one-lane two-way tapers: 20 ft, 4-6 cones.
• departure_spacing: OTTCH 2026 2.3 p.16: taper spacing = S ft, tangent = 2S ft (same as MUTCD 6K.01). Downstream and one-lane two-way tapers: 20 ft, 4-6 cones.
• buffer_tangent_spacing: OTTCH 2026 2.3 p.16: taper spacing = S ft, tangent = 2S ft (same as MUTCD 6K.01). Downstream and one-lane two-way tapers: 20 ft, 4-6 cones.

• cone_28in when {"min_speed": 45}
• cone_28in when {"night": true}

ta-10, ta-30, ta-30r, ta-33

• TMA / protection vehicle is not required here. OTTCH 2026 4.4 p.42 is Guidance ('should') and applies only when workers are exposed and not behind positive protection; Diagram 510 note 7 makes the TMA optional ('with or without a TMA may be used'). The template's optional TMA rows stand.
• Arrow board volume triggers: OTTCH 2026 4.3 says non-freeway multi-lane arrow boards should also be used for heavy volumes, limited sight distance or unexpected closures. Those are not inputs, so TA-30 / TA-30R / non-freeway TA-33 below 45 mph carry a board only at night.
• The OTTCH covers work zones of 72 hours or less. Longer work and ODOT construction projects fall under the ODOT TCP Design Manual (Jan 2026) and Std Specs 00220/00221/00225, which this overlay does not apply. TCP Design Manual 2.4.1 p.37: on ODOT construction projects, cones and tubular markers…
• Pilot car: OTTCH 3.10 and Diagram 340 say a pilot car should be used when the distance between the two Flagger W20-7 signs exceeds one mile, or when line of sight between flagger stations cannot be held. That adds a PILOT CAR FOLLOW ME (G20-4) sign and a vehicle to a TA-10 job. Flagger-sign…
• Twenty-minute stoppage (OTTCH 3.1; Diagram 320 note 9): guidance on flagger delay, not a materials quantity.
• Temporary Pedestrian Accessible Route: OTTCH 1 says all road users including those with disabilities shall be accommodated by a TPAR and that TPAR channelizing devices shall be continuous. That drives device counts on a sidewalk job (TA-28/29), which this estimator does not price.
• ODOT device gating: portable traffic signals need a permit plus State Traffic Engineer approval and must be on the ODOT Qualified Products List (Diagram 330); LED STOP/SLOW paddles must be on the QPL; flaggers must hold ODOT certification cards; apparel is ANSI 107-2015 Class II minimum. None of…
• Sign-spacing field limits: OTTCH Table 2-4 notes cap the field expansion of the table dimensions — non-freeway spacing SHALL NOT exceed 2x the table value, freeway SHOULD NOT exceed 1.5x — and require a 30-ft longitudinal offset where the same message is posted on both sides of the highway. The…
• Merging-taper cone offset: at >=45 mph OTTCH 2.3 offsets merging-taper cones 1 ft per cone, and below 40 mph the offset varies with lane width. This is a placement rule with no effect on count, recorded so nobody looks for it later.
• Oregon's own sign codes: CG20-2A END ROAD WORK, and CW-prefix warning signs (e.g. CW11-1, CW15-10, CW21-10, CW21-11, CW23-3). They are dimensionally compatible with the federal panels, so no code_map is set, but an Oregon plan sheet prints the Oregon codes. Confirm with ODOT before this drives a…
• OTTCH Table 2-4 stops at 70 mph. Above 70 a non-freeway road falls back to the federal Table 6B-1 row (500 ft), lower than Oregon's 700-ft 60-70 tier. Oregon posts no non-freeway road above 70 mph.
• Oregon Diagram 350 (Self-Regulating Lane Closure) is Oregon's low-volume single-lane analogue to federal TA-11 and permits devices-only operation under volume and sight-distance gating. Diagrams 345 (oiling/chip seal) and 370 (in-street transit) have no federal TA. None is priced here.