Glossary. Updated 2026-10-30

What Is a DOT Annual Inspection?

Short answer: A DOT annual inspection is the periodic inspection required by 49 CFR 396.17. Every commercial motor vehicle, including each trailer in a combination, must pass an inspection of the items in Appendix A to Part 396 at least once every 12 months, performed by a qualified inspector, with proof carried on the vehicle.

Definition

The "annual inspection," formally the periodic inspection, is required by 49 CFR 396.17. A motor carrier may not use a commercial motor vehicle unless each component listed in Appendix A to Part 396 has passed an inspection at least once during the preceding 12 months and documentation of that inspection is on the vehicle. Each unit of a combination, such as a tractor, semitrailer, full trailer and converter dolly, is inspected separately.

What it covers

Appendix A lists 15 areas: brake system, coupling devices, exhaust, fuel, lighting, safe loading, steering, suspension, frame, tires, wheels and rims, windshield glazing, windshield wipers, motorcoach seats and rear impact guard. A vehicle does not pass if any listed defect is present.

Who can perform it

The carrier itself, or a commercial garage, fleet leasing company, truck stop or similar business acting as its agent, using an inspector qualified under 49 CFR 396.19. A vehicle that passes a state program meeting Appendix A is covered for 12 months from the last day of the month of inspection.

Records

The inspector prepares a report under 49 CFR 396.21 identifying the inspector, carrier, date, vehicle and the components inspected with results, and certifies it. The report is kept fourteen months. Proof on the vehicle can be the report or a decal with the date, the name and address of the entity holding the report, vehicle identification if needed, and a certification of passing.

For shops

Annual inspections are recurring work for every unit a fleet runs. See the DOT annual inspection checklist and how to do a DOT annual inspection. MetaFleet can schedule inspection reminders and run inspections from your own PDF form; see inspections and DVIRs.

Questions

Is the DOT annual inspection the same as a roadside inspection?

No. The annual inspection is the carrier's periodic inspection under 396.17. Roadside inspections are enforcement inspections under 396.9.

How long is the report kept?

Fourteen months from the date of the report, under 396.21(b).

Sources

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