Start with ordinary crash evidence
Preserve the report number, scene photographs, witness details, vehicle information, medical records, bills, and communications with insurers. Record the carrier name and identifying numbers visible on the truck if it is safe to do so.
Ask what electronic records exist
Some commercial vehicles and carriers maintain electronic logging device records, dispatch information, vehicle data, or other operational records. An electronic logging device records driving time for hours-of-service compliance, but a particular crash may involve different systems or no useful record.
Identify the companies and vehicles involved
The driver, motor carrier, vehicle owner, maintenance provider, or cargo-related business may be relevant depending on the facts. Their roles should be investigated rather than assumed from a logo or trailer name.
Preserve maintenance and load questions
Inspection, maintenance, repair, and cargo records can matter when a defect, mechanical failure, or load issue is alleged. A lawyer can assess whether a preservation request should be sent and which records it should identify.
Act promptly on deadlines
Evidence retention and legal filing periods are different issues. Ask a lawyer familiar with commercial vehicle cases about preservation steps and the applicable state deadline. Do not assume federal trucking rules alone establish negligence.