Wisconsin CDL practice test

The CDL general knowledge test follows federal standards, so these questions apply in Wisconsin just as they do nationwide. Below the test you'll find the Wisconsin-specific steps to actually get licensed.

Wisconsin CDL General Knowledge Question 1 of 10

If your engine is overheating on a hot day, you should:

Getting your CDL in Wisconsin

In Wisconsin, apply through the state licensing agency (WI DMV / DOT). The core steps are the same across states:

  1. Get a valid WI driver's license and provide required identity documents.
  2. Pass the DOT physical with a certified medical examiner and carry your medical card.
  3. Pass the written knowledge tests (general knowledge plus any endorsements you need).
  4. Hold your commercial learner's permit (CLP) for the required waiting period.
  5. Complete Entry-Level Driver Training (ELDT) with a registered provider, if required.
  6. Pass the skills test — pre-trip inspection, basic controls, and road test.

Exact fees, permit hold times, and document requirements are set by Wisconsin. Confirm the current details with the WI licensing agency before you go.

What is different in Wisconsin

Licensing in Wisconsin runs through the Wisconsin Department of Transportation, Division of Motor Vehicles. The part that catches people out is not the test — it is the medical certificate, because the way it reaches the state changed in 2025.

Wisconsin moved before the federal deadline. Since 13 April 2025 FMCSA passes your "Fed Med" card information to the Wisconsin DMV automatically within 48 hours of the exam, and the DMV no longer accepts paper, email, faxed or uploaded certificates. The one exception is historical: an exam performed before 13 April 2025 still has to be sent in by email (fedmed@dot.wi.gov), fax (608) 261-8201, or post — call (608) 267-2290 for details.

Wisconsin calls the four categories "tiers"

Tier 1 is non-excepted interstate, Tier 2 excepted interstate, Tier 3 non-excepted intrastate, Tier 4 excepted intrastate. Tier 1 is the flexible one — it covers you in state and out. Tiers 1 and 3 require a valid examination on file with the DMV at all times.

Wisconsin moved to electronic medical certification on 13 April 2025. The Wisconsin DOT physical page has the rest — what the exam checks, what happens if your certification lapses, and the WisDOT DMV contacts worth having.

Don't forget the DOT physical

A valid medical certificate is required before you can be licensed. Read our DOT physical guide to know what the exam checks and how to pass it the first time.