What a DOT Inspection Decal Must Show (49 CFR 396.17(c))

Under 49 CFR 396.17(c), a commercial motor vehicle can't be used unless documentation of its annual inspection is on the vehicle. You can satisfy that by carrying the full inspection report, or — far more commonly — with a sticker or decal.

The rule is specific about what that decal has to say.

The four required elements

§396.17(c)(2) permits documentation "based on the inspection report (e.g., sticker or decal)" which contains the following information:

1. The date of inspection

§396.17(c)(2)(i). Straightforward.

2. Name and address of the entity where the inspection report is maintained

§396.17(c)(2)(ii). Read this one carefully — it is not "the shop that performed the inspection." It is the motor carrier, intermodal equipment provider, or other entity where the inspection report is maintained.

Those are often the same party, but not always. If a third party holds the report, the decal has to point at whoever actually has it, because the whole point of this line is to tell a roadside official where to go for the underlying document.

3. Information uniquely identifying the vehicle inspected

§396.17(c)(2)(iii) — required if not clearly marked on the motor vehicle. In practice, including it is the safer choice rather than betting on whether an official agrees the VIN plate is "clearly marked."

4. A certification that the vehicle passed

§396.17(c)(2)(iv) — a certification that the vehicle has passed an inspection in accordance with §396.17. The citation itself is doing work here: it's what distinguishes a federal annual inspection from any other sticker on the vehicle.

All four are mandatory. A decal missing one of them isn't a lesser decal; it doesn't do what §396.17(c) asks documentation to do.

One decal per unit

§396.17(a) requires each vehicle in a combination to be inspected separately — tractor, semitrailer, full trailer, and converter dolly if so equipped. Each needs its own inspection, and each needs its own documentation on it.

If you're buying decals for a tractor-trailer, you're buying at least two.

A decal is not a substitute for the report

The decal is documentation based on the inspection report. It doesn't replace it.

Under §396.21(b)(1) the original or a copy of the inspection report has to be retained for fourteen months from the date of the report, kept where the vehicle is housed or maintained, and made available on demand of an authorized Federal, State, or local official.

Note the mismatch: the decal is good for 12 months, the report has to survive 14. Two clocks. Don't purge records on the decal's schedule.

There's also §396.21(b)(3), which catches carriers off guard: if you weren't the one who performed the last annual inspection, you are still responsible for obtaining the original or a copy on demand of an official. If the shop that inspected your equipment two years ago has closed, changed systems, or you've simply lost touch — that's your problem, not theirs.

Do not confuse it with an out-of-service sticker

§396.9(c) prescribes a completely different sticker. When authorized personnel find a vehicle that would likely cause an accident or breakdown, they declare it out-of-service and mark it with an "Out-of-Service Vehicle" sticker.

The consequences are severe: no one may operate the vehicle — including towing it, except by crane or hoist — until all repairs in the out-of-service notice are completed. And under §396.9(c)(3), no person may remove that sticker before repairs are done.

Your annual inspection decal certifies a pass. An out-of-service sticker marks a fail. They should never be mistakable for one another at a glance in a yard.

What if the vehicle fails?

No decal. §396.17(c)(2)(iv) is a certification that the vehicle passed, so a failed inspection has nothing to certify.

The more immediate issue is operational. §396.7 prohibits operating a vehicle in a condition likely to cause an accident or breakdown, independent of any paperwork. There's a narrow exemption in §396.7(b): a vehicle discovered to be unsafe while being operated on the highway may continue only to the nearest place where repairs can safely be made, and only if that's less hazardous to the public than leaving it where it is. That exemption is about getting off the road — it isn't a grace period.

§396.17(g) also requires that parts and accessories be maintained at, or promptly repaired to, the Appendix A minimums. The failed component is supposed to be fixed, not scheduled.

Annual DOT inspection requirements — §396.17
Who can perform a DOT inspection — §396.19 and §396.25
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.