Liability lives in the first hour
Most auto accident disputes are not about whether someone was hurt but about who caused the crash, and the best evidence of that was recorded before anyone had a reason to shade their story.
A caller tells the 911 dispatcher which car ran the light. A driver says something to the responding officer that the bodycam catches. A dashcam keeps rolling through the seconds after impact. The liability file is built from those moments, and they arrive as audio.
Long, scattered, and perishable
Those recordings share three problems. They are long, because the useful ten seconds sit inside a forty-minute bodycam file. They are scattered, because they arrive from different sources on different schedules: a records request, a discovery production, a client's phone, a third-party witness. And they are perishable, because many dashcams record over themselves on a loop and agencies keep 911 and video recordings only as long as their records schedules require, which is why preservation letters go out early.
Hours of listening, minutes of reading
Played back in real time, a crash file is hours of listening before anyone can say what the evidence shows. As text, it is a set of documents your team skims in minutes and searches in seconds. Look for the light, the phone, a street name, or a phrase like "didn't see" across every recording at once, then click the hit to hear the exact moment. Verification is one click, not another full listen.
That is the standard this page is about: every recording in the liability file readable, searchable, and checked against its source before the demand, the mediation statement, or the deposition outline is written.
Where this page fits next to personal injury
Auto accident practice is a specialty within personal injury, and the difference is where the fight is.
A broad injury practice spends most of its recording time on the damages side, with intake, independent medical exams, and treating-provider testimony. Auto accident cases add a liability fight that runs on recordings made at the scene: 911 audio, bodycam, dashcam, and the statements drivers and witnesses gave in the first days.
This page covers that liability side. For intake, IMEs, medical evidence, and HIPAA BAA questions across every injury case type, start at Sonix for personal injury. For the whole legal toolkit, see Sonix for legal.