Enforcement of the law through the Commercial Driver License Information System (CDLIS), a computer network of all states.
Enforcement of CDL disqualifications (87 KB) for alcohol and serious traffic violations such as a BAC of .04 in a commercial motor vehicle, and speeding in excess (15 mph or more) in a commercial motor vehicle.
Disqualification
A disqualification is the withdrawal of a person’s privilege to operate a commercial motor vehicle.
Operation of farm machinery
A driver license is not required to move non-registered farm machinery on a highway between fields or between a farm and a field. However, a Farm Service CDL (36 KB) is available for a person who is employed by a farm service industry for 180 days or less per calendar year.
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License classes
Wisconsin has a classified licensing system. The classes are:
Class A:
For operation of a commercial motor vehicle. Any combination of vehicles with a Gross Vehicle Weight Rating (GVWR), actual weight, or registered weight over 26,000 pounds provided the GVWR, actual weight, or registered weight of the towed vehicle(s) is more than 10,000 pounds.
Class B:
For operation of a commercial motor vehicle. Any single vehicle with a GVWR , actual weight, or registered weight over 26,000 pounds, or such vehicle towing a vehicle with a GVWR, actual weight, or registered weight of 10,000 pounds or less.
Class C:
For operation of a commercial motor vehicle. Any single vehicle with a GVWR , actual weight, or registered weight of 26,000 pounds or less, (or such vehicle towing a vehicle less than 10,000 pounds) transporting hazardous materials requiring placarding or designed to carry 16 or more persons including the driver.
Class D:
For operation of automobiles; light trucks and mopeds.
Class M:
For operation of motorcycles.
If you have questions: E-mail: driverrecords.dmv@dot.state.wi.us
Call: (608) 266-2353
