DOT Roadside Inspection — What Inspectors Check

What does a DOT inspector check during a roadside inspection?

Six levels exist (Level I-VI). Level I is the most comprehensive: driver documents (CDL, medical card, HOS records, DQF subset), vehicle equipment (brakes, lights, tires, steering), securement, hazmat (if applicable). Level II skips the under-vehicle component. Level III is driver-only. Level IV is special studies. Level V is vehicle-only. Level VI is enhanced for radioactive materials.

What's the most common reason for an out-of-service order at roadside?

Hours-of-Service violations and brake defects, almost evenly split. Brake adjustment is the #1 vehicle-side citation; HOS log falsification or missed off-duty time is the #1 driver-side citation. Both trigger immediate OOS.

Can I refuse a DOT roadside inspection?

No. Operating a commercial motor vehicle constitutes consent to inspection per 49 USC 14501. Refusing or obstructing an inspection is itself a violation and can result in the vehicle being placed out-of-service.

How long does a DOT roadside inspection typically take?

Level I: 45-60 minutes. Level II: 30 minutes. Level III: 20 minutes (driver-only). Levels can extend if violations are found and the inspector decides to expand scope.

What happens after a violation is found?

The inspector issues a Driver/Vehicle Examination Report (DVIR or DVER). Out-of-service violations require correction before the vehicle or driver moves. Non-OOS violations are documented but allow continued operation. The inspection result feeds into CSA BASICs scores within 30 days.