Start with the right question
Start by identifying which events you personally observed and which came from another person. A photograph of the final resting positions does not establish every earlier movement. Once immediate safety needs are addressed, give each vehicle a neutral label and use those labels consistently throughout your file.
Work through the checks
Create a vehicle key
Record vehicle A, B, and C with their identifying details privately. Connect each label to the relevant driver, insurer, and claim reference. Do not use a label such as 'at-fault car' that embeds a disputed conclusion into every document.
Split the impact sequence
Describe separate contacts in the order you remember them, including uncertainty. Keep witness accounts independently attributed. If a video starts after the first contact, mark that limitation rather than treating its first frame as the start of the collision.
Match damage to sources
Index each photograph by vehicle, location, and photographer. Preserve wide views as well as close-ups. Ask the appropriate professional to assess whether particular damage relates to a claimed contact; a diagram alone cannot establish that connection.
Keep claims distinct
Track each insurer's requests and responses separately. Record the scope of any offer or release, including which parties and losses it addresses. Do not assume that resolving one property claim resolves injury issues or every participant's claim.
A record you can use
- Vehicle label and private identity reference.
- Observed event, source, and confidence limitation.
- Photo or recording identifier and coverage period.
- Insurer, claim number, and outstanding request.
- Offer scope and questions needing qualified advice.
Keep this record locally. Use document references rather than publishing account numbers or other people's personal details. An empty field means the information is still missing; it should not be filled with an AI guess.
Worked example
Three vehicles stop after two reported impacts. One driver remembers a single jolt; another reports two. The file preserves both statements, labels a rear-camera recording as beginning after the first reported impact, and asks which repair photographs show each vehicle. It does not manufacture a shared sequence just to make the timeline look complete.
This example is fictional and illustrates the method, not a real case result.
Limits and next steps
Responsibility and coverage depend on the evidence, policy wording, and applicable state law. Conflicting accounts require evaluation, not a majority vote among witnesses.
Use the vehicle key when requesting clarification from an insurer or lawyer. Preserve original recordings and record any reporting instructions from the relevant local agency.
Official guidance to check
- California's after-an-accident guidance — a state example, not nationwide reporting instructions
- California automobile coverage guide