Endorsements and classes

​For operation of a commercial motor vehicle (Classes A, B, or C), a driver may also obtain one or more endorsements. Each endorsement requires a special knowledge test​ when originally issued.

Use the interactive driver licensing guide for information on commercial driving requirements, get a checklist of requirements, and pre-fill any required application(s) before visiting a DMV Customer Service Center. You may also electronically submit your application(s) and schedule an appointment with the DMV, depending on your eligibility.

Wisconsin Endorsements are:

  • T=Double/triple trailers
    • Commercial Motor Vehicles with double or triple trailers
  • N=Tank vehicles
    • Any commercial vehicle that is designed to transport a liquid or gaseous material within a tank that is either permanently or temporarily attached to the commercial motor vehicle of the chassis.
  • H=Hazardou​​​s Materials
    • Vehicles transporting hazardous materials requiring placarding or any quantity of a material listed as an agent or toxin.
    • Requires a background check, including fingerprinting​​​, for all drivers renewing or transferring the "H" endorsement for the first time.
    • Requires completion of the Hazardous Materials Endorsement Application​​ MV3735
    • Requires successful completion of the "H" knowledge test.​
  • S=Sch​​​ool bus
    • All school buses, including those which are commercial motor vehicles.
    • Requires a knowledge and driving skills test when originally issued and upon every renewal.
  • P=Passenger vehicle
    • Vehicles designed to carry, or actually carrying, 16 or more passengers, including the driver.
    • Requires a driving skills test when originally issued.
  • F=Farm service (Restricted CDL)
    • ​​Restricted to farm service operation only with classes B/C.​​​

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.
    • The Class D license can also have a school bus endorsement if the vehicle is designed to carry less than 16 persons including the driver.
  • Class M
    • For operation of motorcycles.

​For more information:​

​Driver Eligibility Unit
Email Wisconsin DMV email service​
Phone (608) 264-7447