Does my accident diagram need to be to scale?

No, it does not need to be to scale. The key is that vehicle positions, road layout, and travel direction are clear.

Can I draw my accident diagram by hand?

Yes. A hand-drawn diagram is acceptable, but a digital diagram is often cleaner and easier to share.

As soon as possible after the accident, while your memory is still fresh.

Include what you know for certain and note what you are unsure about instead of guessing.

They may ask clarifying questions if details are unclear, so a clear and detailed diagram reduces follow-up.

Yes. Photos show aftermath, while a diagram shows movement and positions before, during, and after impact.

Adjusters compare both versions with photos, witness statements, reports, and physical evidence.

Yes. A clear accident diagram can be presented as evidence to help explain the sequence of events.

Step-by-step guide for insurance-ready collision diagrams.

Last updated: 21 April 2026

Written by: SFE Editorial Team