For field professionals

A police traffic sketch tool built for the way officers work

Between securing the scene and writing the report, the sketch is usually the slowest part. My Traffic Sketch reduces it to minutes: trace over an aerial photo of the actual intersection, drop in auto-numbered vehicles, record plates, and export a PDF that slots straight into the case file.

Create a police traffic sketch

From scene to case file

The workflow mirrors how collisions are actually documented in the field:

▸Case header: case number, date and officer name print on the export.
▸Vehicles are numbered V1, V2… automatically and carry a license plate and description — the export includes a vehicle table, so the diagram reads without a separate index.
▸Measurements work in feet (or meters), with a scale bar and adjustable grid scale.
▸A north arrow you can point by dragging, so the diagram matches the compass orientation of the scene.
▸A narrative field for a short account of what happened, printed under the diagram.

When no template matches the intersection

Real scenes rarely match a textbook crossing. You can draw the roadway yourself — roads snap together, bend into curves and come in one, two or four lane widths — or paste an aerial photo of the exact location and diagram directly over it.

Illustrative, not forensic

This tool produces illustrative diagrams for reports and communication. It does not replace forensic mapping, total stations or your department's collision reconstruction procedures. Where agency policy defines how scenes are documented, that policy governs.

How it works

1. Enter the case number, date and your name.
2. Paste an aerial photo of the scene, or pick the closest road template.
3. Place and rotate the vehicles, record plates, mark the impact point and skid marks.
4. Add measurements in feet, write the narrative and export the PDF for the file.

Frequently asked questions

Does it work on a phone in the field?

Yes. The editor is touch-friendly: tap to place elements, drag to move them, and the canvas scrolls into view as you work.

Is anything uploaded to a server?

No. Drafts stay in the browser on your device. Export the PDF when you finish and file it according to your procedures.

Is this official police software?

No. It is a free illustrative diagram tool. Your agency's documentation procedures always take precedence.

My Traffic Sketch creates illustrative diagrams. It does not determine fault or perform forensic collision reconstruction. Measurements and case details must be independently verified, and agency, insurer or jurisdiction procedures always take precedence.