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Plain-Language Guide
Evidence That Can Decide a Truck Crash Case
Truck crash cases are won and lost on evidence that does not exist in ordinary car accident cases — and much of it is controlled by the trucking company from the moment of impact.
Electronic logging devices (ELDs) record driving time and duty status — the core proof in fatigue and hours-of-service cases. Engine control modules (ECMs) capture speed, braking and throttle in the seconds before impact. Dashcams and telematics can show exactly what happened — and can be overwritten on short retention cycles.
The driver qualification file reveals whether the carrier should ever have put this driver on the road: license history, prior violations, testing records and training. Maintenance and inspection records expose brake, tire and equipment failures that trace back to company decisions. Dispatch and delivery records can show schedules that could not be run legally.
Because the carrier controls nearly all of it, the decisive move in most cases is the preservation demand — formal notice that this evidence must be retained. Sent early, it protects the case; sent late, it arrives after retention cycles have already erased what mattered.
Joshua Leizerman, Esq. has spent his entire career litigating these cases and was among the first attorneys in the nation Board Certified in Truck Accident Law. Free case review, any time: (419) 260-0377.
Common questions
How long does trucking evidence survive?
It varies — some video and telematics systems overwrite in days and certain records have limited regulatory retention periods. That is why immediate preservation demands matter more than any court deadline.
Can families get this evidence themselves?
Generally not directly — most of it is in the carrier's possession. Counsel obtains it through preservation demands, discovery and, where needed, court orders.
What if evidence was already destroyed?
Courts can impose consequences for spoliation — the destruction of evidence a party had a duty to preserve. Proving that duty and destruction is itself specialized work.
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