Need a DOT inspection near you in Wisconsin?
For trucks and trailers, Wisconsin uses the federal annual model, and Bright Inspect inspects them where they're parked. Motor buses and school buses use State Patrol inspections, which our inspection doesn't replace, and we tell you which applies before you pay.
| Item | Wisconsin |
|---|---|
| Lead agency | Wisconsin State Patrol, with the Wisconsin Department of Transportation |
| Federal rules | Adopted for intrastate carriers (Trans 327) |
| Who's covered intrastate | 10,001 lb or more; passenger carriers; placarded hazmat; limited farm and horse trailer exemptions |
| Annual inspection | Every 12 months, by a qualified inspector for trucks |
| State program | Motor bus and school bus inspections by the State Patrol; the bus program is FMCSA-recognized |
| Sticker | Decal for motor buses; plate sticker for school buses |
Compare Wisconsin with other states on the state requirements hub, or see which states run their own inspection programs.
The Wisconsin State Patrol enforces motor carrier safety through WisDOT's Motor Carrier Safety Assistance Program and its motor carrier enforcement work. State Patrol inspectors also run the motor bus and school bus inspection programs.
Yes. Wisconsin adopts the federal inspection rules, including Part 396, for intrastate motor carriers (Wis. Admin. Code Trans 327.03(5)). Coverage starts at 10,001 lb, with the usual passenger and placarded hazmat triggers; limited intrastate exemptions apply to some farm vehicles and horse trailers.
| Operation | Who's covered |
|---|---|
| Interstate | 10,001 lb or more, plus federal passenger and hazmat triggers (49 CFR 390.5) |
| Intrastate (Wisconsin only) | 10,001 lb or more; more than 8 passengers for compensation or more than 15 not for compensation; placarded hazmat; limited farm and horse trailer exemptions |
Trucks, tractors and trailers need the federal annual at least every 12 months. Motor buses that carry the public need an annual WisDOT inspection, and school buses need an annual State Patrol inspection. FMCSA recognizes Wisconsin's bus inspection program as equivalent to the federal annual, but that doesn't extend to trucks.
| Inspection | Applies to | How often | Rule |
|---|---|---|---|
| Federal annual | Every covered CMV and each unit in a combination | 12 months | 49 CFR 396.17; Trans 327.03(5) |
| Motor bus inspection | Motor buses carrying the public | At least annually; optional second inspection about six months later | Trans 330 |
| School bus inspection | Wisconsin school buses | Annually, and before first Wisconsin titling of new or out-of-state buses | Trans 300; WisDOT school bus inspection |
Every unit counts on its own: see whether each trailer needs its own annual inspection.
The federal annual can be done by an inspector qualified under 49 CFR 396.19: a qualified carrier employee, or a commercial garage, fleet leasing company, truck stop or similar business. That's Bright Inspect's model, designed to meet FMCSA annual inspection requirements.
Motor bus and school bus inspections are done by WisDOT and the State Patrol; only qualifying urban mass transit systems may self-inspect. Our federal annual is not a substitute for a Wisconsin bus inspection, and we confirm which applies before you pay.
Keep the annual report 14 months, and keep proof of your inspector's qualifications while they inspect and for 1 year after. Motor buses inspected by WisDOT get a certificate of inspection decal. For school buses, the inspector places a sticker on the license plate.
| Vehicle | Rule |
|---|---|
| Motor buses | Annual WisDOT inspection with a decal; State Patrol also does spot inspections during the year (motor bus inspection) |
| School buses | Annual State Patrol inspection to Trans 300 standards, plus presale and spot-check inspections (school bus inspection manual) |
| Tow trucks | We're still confirming Wisconsin tow truck inspection rules. Check with the Wisconsin State Patrol directly. |
State Patrol troopers and motor carrier inspectors conduct roadside inspections and run safety and weight enforcement facilities. Wisconsin law requires drivers to stop and submit to inspection when directed (Wis. Stat. 110.075). Federal rules let an officer cite you under 49 CFR 396.17(c) when proof of a current annual inspection isn't on the vehicle; it carries a CSA severity weight of 4. The officer gives the driver an inspection report. The carrier must certify that listed violations were corrected and return it within 15 days, and keep a copy for 12 months (49 CFR 396.9). Fines are set by state law.
We're still confirming roadside fines for a missing annual inspection in Wisconsin. Check with the Wisconsin State Patrol directly.
Stopped without proof of a current annual? See what to do when your inspection expired or failed at roadside and what happens if your annual inspection is expired. Nobody can promise to remove a violation or change a safety score; what fixes the problem going forward is a current inspection and a complete record.
Last reviewed: September 11, 2026
Bright Inspect does the federal annual for trucks and trailers where they're parked in Wisconsin. $99 for one vehicle, with fleet discounts from 2 units.