Inspect the whole combination in one visit
Tractor, trailers and dollies inspected where they're parked, with one record per unit.
One for each unit. For a tractor pulling a semitrailer and a full trailer, the tractor, the semitrailer and the full trailer, including the converter dolly if equipped, must each be inspected, with proof on each unit (49 CFR 396.17(a)).
| Unit | Own annual inspection? | Own proof on the unit? |
|---|---|---|
| Tractor or truck | Yes | Yes |
| Semitrailer | Yes | Yes |
| Full trailer | Yes | Yes |
| Converter dolly | Yes | Yes |
All 13 Appendix A systems on each unit: brakes, coupling devices (fifth wheel, kingpin, pintle hooks, safety chains), exhaust, fuel, lighting, safe loading, steering, suspension, frame, tires, wheels and rims, windshield glazing and wipers. Trailers are checked for the systems they carry.
See the full list in What does a DOT annual inspection check?
Yes, in some states. California requires many trucks and tractors to be inspected at least every 90 days under its BIT program (California Vehicle Code 34505.5). Texas and Pennsylvania run their own annual programs at licensed stations for vehicles registered there. Check your state before booking.
| State | What applies | Source |
|---|---|---|
| California | BIT preventive inspection at least every 90 days for many trucks and tractors | CVC 34505.5 |
| Texas | Texas-registered covered vehicles use DPS-certified stations | FMCSA accepted programs, 2008 |
| Pennsylvania | PA-registered vehicles use official PennDOT inspection stations | FMCSA accepted programs, 2008 |
| Other states | See your state page | All states |
Each unit is one inspection. A single unit is $99. A tractor and one trailer are 2 units at $84.15 each with a 15% fleet discount, 4 to 7 units are $74.25 each with a 25% discount, and 8 or more units get a custom fleet quote. See pricing.
One inspection and one record per tractor, trailer and dolly.