Wisconsin CMV Compliance Guide
WI DOT regulations for commercial motor vehicles
WisDOT Motor Carrier EnforcementOfficial WI DOT websiteOverview
WisDOT Motor Carrier Enforcement and the Wisconsin State Patrol handle commercial vehicle safety. Wisconsin is a Midwestern freight state with I-94, I-90, I-43, and I-39 as major truck corridors. Milwaukee and the Fox Valley are significant freight hubs.
Inspection & Enforcement Program
Wisconsin operates weigh stations and mobile enforcement units. The State Patrol performs Level I through Level III inspections. The state participates in all national enforcement campaigns.
Weight Limits & Oversize/Overweight
Wisconsin follows federal weight limits of 80,000 lbs GVW on Interstate highways. On state highways, Wisconsin allows higher weights with specific configurations. The state has seasonal weight restrictions during spring thaw.
Wisconsin-Specific Requirements
- Wisconsin allows higher weights on certain state highways with 5 and 6-axle configurations.
- The state has extensive seasonal weight restrictions during spring thaw (typically March-May).
- Wisconsin requires a state quarterly fuel tax filing for intrastate carriers not operating under IFTA.
- The state has specific requirements for dairy and agricultural product hauling.
Contact
WisDOT Motor Carrier: (608) 266-9900
Federal Requirements That Apply in Wisconsin
In addition to Wisconsin-specific regulations, all federal DOT and FMCSA requirements apply to commercial vehicles operating in WI. These guides cover each federal requirement in detail:
This information is provided as a general reference. State regulations change frequently. Always verify current requirements with the Wisconsin DOT or your compliance advisor before relying on any information presented here.