Build the crash map
Map a Multi-Vehicle Crash Before Details Blur
30-second answer
Create one page showing every vehicle, occupant, reported direction, visible impact area, final position, camera, witness, and tow location. Keep uncertain details marked as uncertain instead of filling gaps with guesses.
Reviewed by Arta Wildeboer, California attorney (Bar #286995) · Updated
Do this now
- 1Get emergency and follow-up medical care first. Do not delay treatment to photograph, map, or inspect a vehicle.
- 2Label the involved vehicles Vehicle A, Vehicle B, and so on until you have reliable plates or VINs. Add make, model, color, driver, owner, reported direction, lane, visible impact areas, and final position.
- 3Create a separate occupant chart for each vehicle. Record every person's exact seat, restraint use, airbag deployment, remembered interior contact, exit method, and medical transport when known.
- 4Mark witnesses and possible cameras on the map. Save names, contact information, camera locations, the direction each camera faced, and when a preservation request was sent.
- 5Add the report or incident number, tow company, storage location, insurer, claim number, and every date the vehicle moved, was inspected, repaired, released, or transferred.
Avoid this
- Do not guess about speed, fault, distance, or a detail you do not remember. Mark it unknown and keep the source of every later update.
- Do not coordinate a shared story with other occupants or pressure a witness. Each person should preserve an independent account.
- Do not enter an active scene, tow yard, shop, or private property without permission, and do not move or test damaged vehicles or parts yourself.
Save these
- One diagram showing roads, lanes, directions, vehicles, reported impact points, and final positions
- A separate occupant-and-seat chart for every vehicle
- Wide and close scene, exterior, interior, restraint, airbag, debris, sign, signal, and road-condition photographs
- Original phone files, dashcam clips, camera-location notes, witness contacts, and preservation-request records
- Police, sheriff, CHP, fire, ambulance, tow, storage, repair, insurer, and claim identifiers
- Medical transport, hospital, discharge, follow-up, symptom, work-loss, and expense records for each injured person
Common questions
What if I do not remember the first impact?
Write that you do not remember. Preserve what you personally observed and identify the source of any later information. Do not turn another person's account into your own memory.
Why map every occupant's seat?
Seating position, restraints, airbags, interior contact, and exit or rescue information may help connect each person's medical record to the vehicle evidence. They do not prove fault by themselves.
Should I move debris or visit the tow yard to complete the map?
No. Do not enter unsafe or restricted areas, take property, or alter the vehicle. Record the location and custodian, then seek lawful access and qualified help.
Does a police diagram settle the impact sequence?
Not necessarily. Preserve the original report and compare it with photographs, video, witnesses, vehicle condition, medical records, and other reliable evidence. Document a discrepancy without altering the report.
What if an insurer wants a recorded statement before I finish the map?
Be truthful and do not guess. Record who called, which insured and claim the person represents, what was requested, and any stated deadline. Consider getting advice before a detailed recorded statement in a serious or disputed crash.
Want more detail?
Read the full explanation
Whittier Rollover Crash Hospitalizes 10: What Evidence Matters?Official resources
Questions about your situation?
Talk with Arta Wildeboer
A short guide cannot account for every fact. A free consultation can help you understand the next step without pressure.