Annual DOT Inspection Requirements (49 CFR 396.17)

The federal annual inspection is governed by 49 CFR 396.17. This page explains what the rule requires in plain language. It is informational only, not legal advice — the operative text is at eCFR.

The core rule

You may not use a commercial motor vehicle unless both of these are true:

Every component listed in Appendix A to Part 396 has passed an inspection within the preceding 12 months, and
Documentation of that inspection is on the vehicle

Both halves matter. A vehicle that was properly inspected but is carrying no documentation does not satisfy §396.17(c).

Each unit gets its own inspection

This is the part that catches people out. §396.17(a) says the term "commercial motor vehicle" includes each vehicle in a combination.

For a tractor pulling a semitrailer and a full trailer, that means:

The tractor — inspected
The semitrailer — inspected
The full trailer — inspected
The converter dolly, if so equipped — inspected

Four units, four inspections, four sets of documentation. Not one inspection of "the truck."

What counts as documentation on the vehicle

§396.17(c) gives you two options:

Option 1 — carry the inspection report. The full report prepared under §396.21(a).

Option 2 — a sticker or decal based on that report. This is the common choice, and the rule is specific about what it must contain:

The date of inspection
The name and address of the entity where the inspection report is maintained — note carefully, this is where the report lives, which is not automatically the shop that did the work
Information uniquely identifying the vehicle, if that information isn't already clearly marked on the vehicle
A certification that the vehicle passed an inspection in accordance with §396.17

A decal missing any of these four does not do the job the regulation asks of it.

Who may perform the inspection

You have three paths under §396.17:

Self-inspection (§396.17(d)). A carrier may inspect its own vehicles, provided they aren't subject to a mandatory State program under §396.23(a)(1).

An agent (§396.17(e)). You may have a commercial garage, fleet leasing company, truck stop, or similar commercial business perform the inspection on your behalf — provided that business:

operates and maintains facilities appropriate for commercial vehicle inspections, and
employs qualified inspectors as required by §396.19

A State program (§396.23). If your vehicle is subject to a mandatory inspection program that FMCSA has determined to be as effective as §396.17, you must meet the requirement through that program. In that case an inspection performed outside the program doesn't substitute. This is jurisdiction-specific — check your State.

In all cases, the person performing the inspection has to be qualified under §396.19, and anyone touching the brakes has to be separately qualified under §396.25. See Who can perform a DOT inspection.

State inspections and the month-end rule

§396.17(f) recognizes periodic inspections performed under a State government or equivalent jurisdiction in the Canadian Provinces, the Yukon Territory, or Mexico — provided the inspection meets the Appendix A minimums.

The timing convention is different, and it's easy to miss: those inspections are good for 12 months commencing from the last day of the month in which the inspection was performed, not from the inspection date itself.

Which vehicles are exempt

Part 396 as a whole does not apply to:

Covered farm vehicles, as defined in 49 CFR 390.5
Pipeline welding trucks, as defined in 49 CFR 390.38(b)

If your equipment falls into either category, none of Part 396 reaches it — not the annual inspection, not the daily driver report, not the maintenance records.

The obligation doesn't stop at inspection day

§396.17(g) makes the carrier or intermodal equipment provider responsible for ensuring all parts and accessories are maintained at, or promptly repaired to, the Appendix A minimum standards — continuously, not annually.

Separately, §396.3(a) requires you to systematically inspect, repair, and maintain all vehicles under your control, and §396.7 prohibits operating a vehicle in a condition likely to cause an accident or breakdown. Passing an annual inspection in March does not make a vehicle compliant in October.

Penalties

§396.17(h): failure to properly perform the required annual inspection subjects the motor carrier or intermodal equipment provider to the penalty provisions of 49 U.S.C. 521(b).

Who can perform a DOT inspection — §396.19 and §396.25
What a DOT inspection decal must show — §396.17(c)(2)
Appendix A pass/fail standards — the measurements
Inspection recordkeeping requirements — §396.21

This page summarizes 49 CFR Part 396 as revised through the 2025 edition. It is informational only and does not constitute legal or regulatory advice. Regulations change and State requirements vary. Consult the current eCFR and your State's requirements.