Dash Cam Footage in a Car Accident Claim: How It Is Used

A car accident claim without video is decided on accounts: two drivers, perhaps a witness, a police officer who arrived afterward, and the physical evidence of damage and debris. Insurers assign fault percentages within that uncertainty, and the percentage they assign the injured driver is the discount they take on the claim. Footage removes the uncertainty. A recording that shows the other driver running the red, changing lanes without signaling, or rear-ending a stopped car leaves nothing to assign, and insurers that would have argued 30 percent fault concede.

The effect on time is as large as the effect on value. A disputed-fault claim can take months of back and forth and sometimes a lawsuit to resolve the fault question; footage sent with the first demand resolves it in a week. Attorneys who handle these claims ask about dash cams first, because the presence of a recording changes the whole approach.

The limits are real. Footage shows what the lens saw, which is usually forward and sometimes rearward, at the resolution the camera records and in the lighting that existed. It may not show the signal, the other car's speed, or what happened outside the frame. It may show the moment of impact but not the three seconds before, when the fault was decided. And it shows your own driving as clearly as the other driver's.

Most dash cams record in a loop, overwriting the oldest files as the card fills, with a crash-detection function that locks the file when the accelerometer registers an impact. The lock is not reliable; low-speed crashes may not trigger it, and some cameras lock only the clip containing the impact and overwrite the minutes before. Save the file manually the same day: remove the card and copy every clip from the period around the crash to a computer and a cloud backup, before the camera is powered on again.

Keep the original files unaltered. The metadata, the timestamp, the GPS track and speed overlay if the camera records them, and the file's creation data are what make the footage authentic, and editing, trimming or converting the file removes them. Provide copies for the insurer and the attorney, and keep the original on the card or a drive that is not reused.

If the camera recorded the crash and you intend to make a claim, the footage is evidence that must be preserved from that point. Deleting it, or allowing it to be overwritten after you knew it existed and mattered, can be treated as destruction of evidence, with consequences in litigation. The same rule applies to the other driver, which is why a preservation letter demanding that they keep any footage goes out early.

Suppose you were traveling in the right lane of a four-lane road when a driver in the left lane swerved into you to avoid a stopped car, pushing you onto the shoulder and into a sign. You suffered a fractured wrist and a neck injury, with $27,000 in medical bills and five weeks off work. The other driver told police you had drifted into her lane, and the police report recorded both accounts without a finding.

Her insurer assigned you 50 percent fault, which in your state halved the claim. Your dash cam, which you had saved that evening, showed you steady in your lane for the preceding thirty seconds, her car entering your lane without signaling, and the stopped car ahead of her that explained why. The speed overlay showed you at 38 in a 40 zone.

An attorney sent the footage with a written demand. The fault assignment was withdrawn within days and the claim settled on the injury. Had the footage also shown you at 55, or looking at a phone, it would have been produced regardless once the insurer learned a camera existed, and the fault split would have gone the other way. All figures are hypothetical; the pattern of a he-said-she-said claim resolved by a recording is routine.

The value of the footage depends on what is done in the first day.

• Tell the police at the scene that you have a dash cam and that the crash is recorded; ask that the report note it.
• Do not show the footage to the other driver at the scene, and do not post it online; it will be used by whoever sees it.
• Remove the card and copy every clip from the period around the crash to a computer and a cloud backup the same day, before the camera overwrites it.
• Keep the original files unaltered, with their metadata; make copies for the insurer and attorney.
• Review the footage yourself, and with an attorney if fault is contested, before sending it to any insurer; it may show things that help or hurt.
• Provide a copy, never the camera or the card, and provide it in writing with a note of the date and time it was recorded.
• Have a preservation letter sent to the other driver for any footage from their vehicle, and request footage from nearby businesses, buses and traffic cameras within days.

Dash cam footage is admissible in every state under the ordinary rules of evidence, which require that it be authentic, that it fairly show what it purports to show, and that it be relevant; a witness who can say the camera was in the car and recorded the crash is usually enough. A few states regulate where a camera may be mounted on the windshield, and a violation does not make the footage inadmissible but may draw a citation. Audio recording raises a separate question in the states that require all parties' consent to record a conversation, which applies to conversations inside the car, not to the video of the road.

In litigation, the footage must be disclosed and produced to the other side under discovery rules in every state once a claim is made, whether or not it helps you. A party who destroys or loses footage after a claim exists faces sanctions, including an instruction to the jury that the footage would have been unfavorable. The same applies to the other driver and to businesses that receive a preservation request.

Comparative negligence rules decide what the footage does to a shared-fault finding: it may reduce the injured driver's share to zero, or it may establish a share that, in the four contributory negligence states, bars the claim. Deadlines are the state's injury statute, one year in Tennessee and Kentucky, two in Texas, California, Florida and Georgia, three in New York and North Carolina, but the practical deadline for footage is the camera's loop, measured in hours.

Most crashes are recorded by someone, even when neither driver has a dash cam. Businesses at intersections have exterior cameras; transit buses record forward and interior; many traffic signals have cameras, though not all record; doorbell cameras on residential streets capture crashes and hit-and-runs; and other drivers' dash cams, especially commercial vehicles, record the road around them. All of it is retained for limited periods, days for many business systems and weeks for buses, and all of it is obtained by asking the right owner before it is overwritten.

The request is a preservation letter, sent by an attorney or by you, identifying the date, time and location and asking that the footage be kept; a subpoena follows in litigation if the owner will not provide it voluntarily. Transit agencies and cities have formal public records processes. Businesses often provide footage to a polite request from the person involved, and sometimes only to an attorney.

Identifying the cameras is done at the scene or in the first days: a walk around the intersection, a note of every business and signal pole, and a request to each. It is the single most productive hour in a disputed-fault claim.

Dash cam footage, your own or someone else's, is the evidence that most often decides a disputed-fault claim, and its value depends on saving it in the first hours, keeping it intact, reviewing it before producing it, and requesting the other cameras that captured the same seconds. The questions to answer early are whether footage exists, what it shows, and what cameras nearby may have recorded. Most personal injury attorneys work on contingency and will review footage as part of evaluating a claim.

Ask Legal Matters is a free claim-review request service, not a law firm. Requests may be shared with independent attorneys and legal services partners who handle inquiries in your state, and an attorney must evaluate the facts before anyone can say what the claim is worth. If you have footage of a crash that injured you, you can request a free claim review.

• Car Accident Claims in the United States: The Complete Guide
• Truck Accident Claims: Liability, Federal Rules and Compensation
• Motorcycle Accident Claims: Overcoming Rider Bias and Recovering Fully
• Airbag Did Not Deploy in a Crash: Can You Sue, and Whom?
• At Fault in a Car Accident? Comparative Negligence Explained
• What Is the Average Car Accident Settlement? What Sets the Value
• Back and Neck Injury Settlement After a Car Accident: Factors
• Bicycle Accident Claim: Hit by a Car While Riding
• Broken Bone Car Accident Settlement: What Drives the Value

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