Wisconsin Department of Transportation

Alert: The following services will be unavailable on Saturday, January 5, 2013 from 12 a.m. (midnight) to 6 a.m. CST due to system maintenance.

Commercial driver license (CDL) - How to apply

The interactive driver license guide is a helpful tool for those looking for information on commercial driving.

NOTE: You must pass a medical examination and hold a valid Federal Medical Card to drive in intrastate or interstate commerce in accordance with Federal Motor Carrier Safety Regulations 49 CFR 391, Subpart E. You must show your Federal Medical Card to the DMV at the time of licensing to avoid restrictions on your license. See CDL medical requirements.

NOTE: You must complete form MV3230, Commercial Driver Certification: Tier of Operation which tells the Wisconsin DMV where you operate commercially.

1. Study the appropriate section(s) in the CDL manual before taking your test(s). All applicants for a CDL must pass the General Knowledge test.

Topic / Test subject Questions CDL manual
B/C - General Knowledge 50  Section 1-3
A - Combination Vehicles 20  Section 6
Air Brakes 25  Section 5
P - Transporting Passengers 20  Section 4, also Section 2
T - Doubles and Triples 20  Section 7, also Sections 2, 5 and 6
N - Tank Vehicles 20  Section 8, also Sections 2, 5, 6 and 9
H - Hazardous Materials 30  Section 9
S - School Bus 25  Section 10
F - Farm Services 10 Farm Service Manual

2. Take and pass the appropriate knowledge test(s) for the vehicle you plan to drive.

3. Obtain your Commercial Driver Learner permit (CLP).

4. Schedule and pass the pre-trip, backing test and skills test(s) with an approved third party tester.

5. Add the CDL classes and endorsements to your Class D license.

Additional information

Questions? Contact us: Wisconsin DMV email service
Call: (608) 264-7049

Last modified: March 26, 2015

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