How Crash Reports and Dashcam Video Shape an Auto Accident Claim
@daltonbzxn976
November 6, 2026 · 3 min read
Evidence from a car crash starts to disappear within hours. Cars are towed and repaired, video is overwritten and witnesses become harder to find. An auto accident lawyer typically starts with the police report and any photos or video, then the data stored in the vehicles. This article explains how each source fits into a claim.
The crash report
When officers respond to a crash, they usually prepare a crash report, sometimes called a police report. It usually records who was driving each vehicle and which insurer covers it, and it often includes a diagram, a short narrative and any citations. Many states also require drivers to report crashes that involve injury, death or property damage above a set amount. Copies are usually available from the agency that responded, whether that is a city police department, a sheriff's office or the state highway patrol, often for a small fee.
Insurers rely heavily on the crash report, but it is not the final word on fault. Rules on using an officer's https://zanefecj285.theglensecret.com/questions-to-ask-before-hiring-an-auto-accident-lawyer opinions at trial vary by state. When a report has a factual error, such as a wrong plate number, the agency may accept a request to correct or supplement it. A car accident lawyer will check the report against the photos and statements.
Video and photo evidence
Dashcam video can show the moments before a crash more clearly than any witness. Keep the original file with its timestamp, rather than a phone recording of the screen, and make a backup copy. Nearby businesses, buses and traffic cameras may have recorded the crash too, though many systems record over footage within days or weeks. Photos taken at the scene show vehicle positions, debris, skid marks and road signs, and photos of injuries taken over several weeks can show how they changed.
The car's own black box
Many cars and light trucks carry an event data recorder (EDR). NHTSA describes an EDR as a device that records technical vehicle and occupant information for a brief period, seconds rather than minutes, around the time of a crash. Depending on the vehicle, it may record speed and braking, along with seat belt use. NHTSA's rule in 49 CFR Part 563 sets requirements for EDRs in light vehicles that have them. Under the Driver Privacy Act of 2015, EDR data generally belongs to the vehicle owner or lessee, and others may access it only in limited situations, such as with the owner's consent or a court order.
EDR data can be lost if the car is repaired or crushed. Total loss vehicles are often moved to salvage auctions within weeks, so an automobile accident attorney may send a preservation letter asking that the vehicle be held until the data can be downloaded.
Witnesses and medical records
Independent witnesses carry weight because they have no stake in the claim. Collect their names and phone numbers at the scene when it is safe. Medical records link the injuries to the crash, and gaps in treatment are often used by insurers to dispute a claim. Keeping the claim number in one place, with a log of each call to the adjuster, makes later questions easier to answer. A short journal of pain levels and missed work, written while the details are fresh, can also help. This article is general information, not legal advice, and it does not predict the result of any claim.