A Truck Case Is Not a Bigger Car Case
A collision with a tractor-trailer or a commercial truck runs on a different body of law and a different clock. The driver is one defendant. The motor carrier is usually another, and it can be responsible for hiring, training, supervision and the condition of the vehicle. Depending on the load there may also be a broker, a shipper or a maintenance contractor, each with its own insurer and its own lawyers working the file from the first day.
Interstate carriers operate under the Federal Motor Carrier Safety Regulations, which cap driving hours, require electronic logging, and set out inspection and maintenance duties. A violation of those rules is often the heart of the case, and the records that prove it are kept only as long as the regulations require.
Evidence that erases itself
Electronic logging data, engine control module downloads, dashcam footage, dispatch messages and driver qualification files all have retention periods measured in months, some in weeks. A preservation letter has to go to the carrier early, before anything is "routinely" overwritten. This is the single biggest reason a truck case should not sit.