Wisconsin CDL — General Knowledge Practice Test

The Wisconsin CDL — General Knowledge knowledge test has ~50 questions; you need ~40 correct (80%) to pass.

Or take one of 10 full-length practice tests

50 questions · pass with 40 correct. You get instant feedback and an explanation after every answer.

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The full-length test, with feedback and an explanation after every answer.

Wisconsin CDL — General Knowledge practice tests

10 full-length practice tests, each with 50 questions and a pass mark of 40, like the real test. You see the answers and explanations after you grade.

Test 1
50 questions · pass with 40
A Class C vehicle is one at or under 26,000 pounds that meets which condition?
Test 2
50 questions · pass with 40
At a crossing with gates and flashing lights, when may you proceed?
Test 3
50 questions · pass with 40
Going from 20 mph up to 40 mph roughly changes your braking distance by how much?
Test 4
50 questions · pass with 40
After you stop on the road or shoulder, within how long must your emergency warning devices be set out?
Test 5
50 questions · pass with 40
When there is not enough room to stop, what can often be done more quickly than stopping?
Test 6
50 questions · pass with 40
The advance warning sign posted ahead of a public rail crossing has what shape and color?
Test 7
50 questions · pass with 40
Why should you take the ignition key with you during the walk-around portion of the inspection?
Test 8
50 questions · pass with 40
Under Wisconsin's Implied Consent law, what happens if you refuse a requested test for alcohol or drugs?
Test 9
50 questions · pass with 40
How long is a Wisconsin Commercial Learner Permit valid?
Test 10
50 questions · pass with 40
When an aggressive driver confronts you, what is the first action to take?