What Happens When Two Drivers Disagree About Who Caused the Accident?
Two drivers can walk away from the same intersection with two completely different, sincerely held versions of what just happened, and someone has to sort it out.
The short answer
When drivers disagree about fault, each insurer typically investigates independently, gathering evidence like photos, statements, and any police report before assigning a percentage of responsibility to each driver. If the two insurers can’t agree, many use an inter-company arbitration process to resolve the dispute without involving the drivers directly. Fault percentages, not just a single winner and loser, are common outcomes, since many states allow for shared responsibility.
How fault gets investigated
Each insurer generally assigns an adjuster to review the available evidence and reconstruct what likely happened. That includes photos of vehicle damage and its location, any police report and citations issued, witness statements, and sometimes physical evidence like skid marks or the point of impact on each vehicle. Recorded statements from both drivers are often part of this process as well, since what each driver says about the sequence of events matters as much as the physical evidence.
Why fault often isn’t all-or-nothing
Many states use a comparative negligence framework, meaning fault can be split between drivers rather than assigned entirely to one party. A driver who was speeding might still recover a partial payout if the other driver ran a stop sign, with the settlement adjusted to reflect each driver’s share of responsibility. This differs by state, and some states use stricter rules that limit recovery once a driver’s share of fault crosses a certain threshold, so the exact math depends heavily on where the accident happened and how liability coverage is structured under each driver’s policy.
What happens when insurers disagree
- Independent assessment. Each insurer forms its own opinion of fault based on its own investigation, which can differ from the other insurer’s conclusion.
- Arbitration between insurers. Many insurers participate in industry arbitration systems designed to resolve fault disputes between companies without going to court.
- Direct negotiation. In some cases, the two insurers’ claims representatives simply negotiate a split based on the evidence each side presents.
- Litigation as a last resort. When arbitration or negotiation doesn’t resolve things, and enough is at stake, a fault dispute can end up in a courtroom, though this is less common than the earlier steps.
What a driver can do
A driver involved in a fault dispute generally can’t force a faster resolution, but can support their own case by providing complete, accurate documentation early. That means photos taken at the scene, a written account recorded soon after the incident, and any contact information for witnesses who saw what happened. If there was no police report filed at the time, gathering this kind of supporting evidence becomes even more important, since there’s no official third-party account to lean on, and it’s worth asking the adjuster handling the claim what specific evidence would be most useful to submit.
The bottom line
A fault disagreement between drivers is common and doesn’t mean the claim stalls indefinitely — it just means the process runs through an extra layer of investigation and, sometimes, negotiation between the insurers themselves. Understanding that fault can be shared, and that documentation from the scene carries real weight, helps make sense of an outcome that might otherwise feel arbitrary.