DOT annual inspection rules, answered in plain language

Federal rules require every commercial motor vehicle to pass an inspection covering Appendix A to 49 CFR Part 396 at least once every 12 months, done by a qualified inspector, documented in a report kept for 14 months, with proof on the vehicle. Each answer below covers one question, with the regulation it comes from.

Annual inspection due or expired?

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The basic rule

Under 49 CFR 396.17, every commercial motor vehicle, and every unit in a combination, must pass an Appendix A inspection at least once every 12 months.

Who can inspect

The carrier or a commercial business can do the annual, as long as the inspector meets 49 CFR 396.19 and no state program covers the vehicle.

Records and proof

The inspection report stays on file for 14 months, and proof of a current inspection has to be on the vehicle.

Enforcement

A missing or expired annual shows up at roadside stops, in compliance investigations and in new entrant safety audits, so here is what happens and what an inspection costs.

Does my vehicle need a DOT annual inspection?

Yes, if it is a commercial motor vehicle operating in interstate commerce. Federal rules require every CMV, and every trailer in a combination, to pass an inspection at least once every 12 months, with proof on the vehicle (49 CFR 396.17). Your state may set different lines for intrastate vehicles.

Which vehicles are federal commercial motor vehicles. Last reviewed: October 13, 2026.
Your vehicleFederal CMV? (49 CFR 390.5)
Truck, tractor, trailer or combination rated 10,001 lb or moreYes
Vehicle designed for 9 to 15 passengers, including driver, carrying passengers for payYes
Vehicle designed for 16 or more passengers, including driverYes
Any vehicle carrying hazardous materials that require placardsYes

Intrastate only? Thresholds differ by state. Florida, Texas and North Carolina start ordinary intrastate trucks at 26,001 lb, for example. Check your state.

Which federal rules cover the annual inspection?

Most annual inspection questions come back to a handful of federal sections. This table shows what each one covers and where to read it.

Federal rules behind the DOT annual inspection. Last reviewed: October 13, 2026.
RuleWhat it coversAnswer page
49 CFR 396.17The annual (periodic) inspection: every 12 months, every unit, proof on the vehicleWhat 396.17 requires
Appendix A to Part 396The minimum list of components the inspection must checkThe checklist
49 CFR 396.19Who is qualified to inspect, and the records the carrier keeps on themWho can inspect
49 CFR 396.21What the report must include and how long to keep itRecords
49 CFR 396.25Qualifications for anyone who works on brakesDoing your own
49 CFR 396.9Roadside inspection reports and the 15-day certificationRoadside vs. annual
49 CFR 385.321Violations that automatically fail a new entrant safety auditNew entrant audit

Frequently asked questions

12 months. A federal annual inspection must have been passed within the preceding 12 months, with proof on the vehicle (49 CFR 396.17(c)). Inspections done under an FMCSA-accepted state program count for 12 months from the last day of the month the inspection was done (396.17(f)). More on timing.

No federal grace period exists. Once 12 months have passed, the vehicle no longer has a valid annual inspection and can be cited at roadside. See what happens when it expires.

Yes. Federal rules treat each vehicle in a combination as a CMV, so the tractor, semitrailer, full trailer and converter dolly each need their own annual inspection and proof (396.17(a)). Read the trailer rule.

Yes, if the person inspecting meets the qualifications in 49 CFR 396.19 and your vehicle isn't required to go through a state inspection program. You must keep proof of the inspector's qualifications. How self-inspection works.

No, in almost every case. A 2016 FMCSA rule removed the option of using a roadside inspection as the annual (Federal Register, July 22, 2016). A CVSA decal shows a recent roadside pass, not an annual inspection. Roadside vs. annual.

Keep each annual inspection report for 14 months from the inspection date, where the vehicle is housed or maintained (49 CFR 396.21). Keep inspector qualification records while the person inspects, plus one year. Record rules.

You can be cited under 49 CFR 396.17(c). In 2025 this was the 4th most common vehicle violation, and it carries a CSA severity weight of 4 (J.J. Keller analysis of FMCSA data). Defects found at the same stop can lead to an out-of-service order. Fines are set by state law. What to do now.

FMCSA does not approve or certify private inspection companies. Our inspection is designed to meet FMCSA annual inspection requirements.

Need your annual inspection done?

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