Federal Motor Carrier Safety Regulations

The FMCSRs establish binding requirements for commercial motor vehicle operations, including driver qualification in Part 391, driving rules in Part 392, equipment and inspection standards in Parts 393 and 396, hours of service in Part 395, and controlled substances testing in Part 382.

Carriers are responsible not only for their own compliance but for ensuring their drivers comply, which creates direct liability separate from any vicarious theory.

Alternative Names:

FMCSRs, Federal Safety Regulations

Why it Matters?

Nearly every trucking case is tried against the framework of these regulations. Plaintiff counsel establish the rule, show a violation, and argue the violation caused the crash, which converts a negligence case into a safety-rule case with punitive potential. Defense preparation begins with a compliance audit of the specific parts implicated by the crash facts.

Frequently Confused with

Related terms

Frequently asked questions

Is violating an FMCSR negligence per se?

It depends on the state. Some jurisdictions treat regulatory violations as negligence per se, others as evidence of negligence for the jury to weigh.

Which parts matter most in litigation?

Part 391 on driver qualification, Part 392 on driving rules, Part 395 on hours of service, Part 396 on inspection and maintenance, and Part 382 on controlled substances testing.