TCP/Gen_ Open the app
Updated with the latest rules from Caltrans (CA MUTCD 2026)

AI traffic control,
in minutes.

Skip the drafting. Type an address and draw where the crew is working. TCPGen's AI reads the road, picks the layout, places every sign and cone, and hands you a finished plan set to review and sign.

Start a planSee what it does
AI reads the aerialRoadway drawn for youSigns and cones placed to codeFull sheet set, ready to sign
Smart from the first click

You mark the work. It does the drafting.

The judgement calls a planner makes on every sheet, built in.

Aerial read by an AI vision model

Through lanes, turn pockets, median type, crosswalks and signal control are read from high-resolution imagery, each with a confidence rating. Low confidence is flagged at Review.

Roadway geometry from map data

Centerline, lane count, medians, curb returns, cross streets and driveways are built from live map data and stationed along the road. No tracing.

Devices placed per CA MUTCD 2026

Merge taper L, buffer, sign spacing A/B/C and channelizer spacing are computed for the design speed from Tables 6B-1, 6B-2 and 6K-101(CA).

Complete 11 × 17 sheet set

Notes sheet, plan sheets per window and phase, cross-street sheets, and an optional to-scale site plan at 1" = 20' to 100' over the aerial.

What you get

An 11 × 17 vector PDF set, ready to review and sign. Real output for a right lane closure on a 45 mph arterial.

To-scale site plan sheet drawn over the aerial photo Plan sheet showing the right lane closure with signs, taper, buffer and cones
01Roadway drawn for youLanes, curbs, medians, cross streets and driveways.
02Signs and cones placed to codeSpacing, tapers and buffers from the 2026 tables.
03Right layout, picked from your boxLane, side and typical application chosen for you.
04Equipment countedEvery cone, sign and device, listed.
05To scale, over the aerialA site plan sheet at 1" = 20' to 100', real road shape.
01Roadway drawn for youLanes, curbs, medians, cross streets and driveways.
02Signs and cones placed to codeSpacing, tapers and buffers from the 2026 tables.
03Right layout, picked from your boxLane, side and typical application chosen for you.
04Equipment countedEvery cone, sign and device, listed.
05To scale, over the aerialA site plan sheet at 1" = 20' to 100', real road shape.

Three steps. That's it.

  1. 1Find the addressAny address or intersection. TCPGen pulls the streets around it.
  2. 2Draw the work areaDrag a box on the aerial. It sets the lane, the side and the layout.
  3. 3Check and exportConfirm anything the AI flagged, then download the 11 × 17 PDF set.
The AI

It reads the road the way a planner does

Aerial photo of a four-lane arterial at a signalised intersection, with the AI's reads marked on it
Signal at the cross streetSURE
Left-turn pocketFAIRLY SURE
2 through lanes each waySURE
Raised medianSURE
Crosswalks on all legsFAIRLY SURE

Before you draw anything, the AI studies the sharpest aerial available and reads what a planner would read on a site visit: through lanes, turn pockets, the median, crosswalks and signals. Each read comes with how sure it is.

Sure reads fill in the plan. The map data is read the same way, and the two are compared.

When the map and the photo disagree, it asks you.
You see both answers side by side at Review and pick, before anything exports. The speed limit gets the same treatment, because it sets your tapers and sign spacing.
Quick reference · CA MUTCD 2026 Work-zone numbers on one page
Sign spacing, 35 mph urban200 ft
Buffer, 45 mph360 ft
Merge taper, 12 ft lane, 45 mph540 ft
One-lane two-way taper50–100 ft
Free download · updated Oct 2026

The 2026 rules changed. Get the cheat sheet.

Sign spacing now steps every 5 mph, the tables were renumbered, and some typical application names changed. One free PDF covers it, updated with the latest rules from Caltrans: CA MUTCD 2026, effective January 18, 2026.

Download the PDF