California truck accidents: preserve evidence before it disappears

Start before routine retention periods expire.

Many interstate and other covered motor carriers operating in California are subject to federal recordkeeping rules. Whether a particular rule applies depends on the carrier, vehicle, operation, and any exemption, so the first step is identifying the parties and type of commercial transportation involved.

When 49 C.F.R. § 395.8 applies, a motor carrier must retain drivers’ records of duty status and required supporting documents for at least six months from receipt. That is a federal minimum retention period, not a deadline for an injured person to bring a California claim and not a guarantee that every potentially useful record will still exist for six months. A focused preservation request should be considered promptly.

Duty records can help reconstruct the work timeline.

Records of duty status may identify the date, total miles driven, truck and trailer numbers, motor carrier, co-driver, changes in duty status, and shipping information. Supporting documents can add context about when and where the driver worked, stopped, fueled, or handled a shipment.

These records do not establish fatigue or fault by themselves. They should be evaluated with electronic logging data, dispatch communications, trip documents, physical evidence, witness accounts, and the circumstances of the collision.

The federal accident register follows a longer schedule.

Under 49 C.F.R. § 390.15, a covered motor carrier must maintain an accident register for three years after each qualifying accident. The register includes the accident date, location and state, driver’s name, number of injuries and fatalities, and whether certain hazardous materials were released.

The carrier must also maintain copies of accident reports required by a state, another government entity, or an insurer. The federal regulation uses a defined meaning of “accident,” so not every roadway event necessarily qualifies for this register.

Maintenance records run on a different clock.

For vehicles covered by 49 C.F.R. § 396.3, specified maintenance records must generally identify the vehicle, record inspection and maintenance due dates, and document the date and nature of inspections, repairs, and maintenance performed. These records can help explain what was scheduled and what work was actually completed.

The regulation generally requires those records to be kept where the vehicle is housed or maintained for one year and for six months after the vehicle leaves the carrier’s control. Applicability and the exact record set should be assessed for the particular truck, trailer, and carrier.

Preserve more than the regulatory minimum.

Potential evidence after a California truck accident may extend beyond records specifically named in the federal retention rules. Depending on the facts, it may include dash-camera footage, electronic logging exports, engine-control or telematics data, dispatch messages, bills of lading, inspection and maintenance files, driver qualification and training records, insurance documents, phone or app data, scene photographs, and the vehicles themselves.

Not every item is governed by the same retention period, and not every item will be relevant or obtainable in every case. A narrowly tailored preservation request can identify the collision, vehicles, drivers, time window, and categories of evidence without assuming what the evidence will show.

Common questions