General Knowledge practice test
50 questions, graded at the end. Get 40 right to pass.
California · Class A knowledge tests
CDL permit
practice test.
Learn the rules before you sit the written tests. 230 questions written from the California Commercial Driver Handbook, each one explained and tied to its handbook section.
Test readiness
Getting started
- Permit tests
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- Backing drills
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- Test day
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Next
A practice estimate from your best permit test scores, your drill medals and Test day. It is not a prediction of your DMV result.Study a topic
The answer and the reason appear after every question.
Missed questions
Questions you get wrong collect here, so you can drill them until they stick.
Common questions
Before you start
Is this the official DMV test?
No. These are practice questions written from the California Commercial Driver Handbook. The DMV writes its own questions, so expect different wording on test day.
What score do I need to pass the real test?
CDL knowledge tests require at least 80 percent correct. Each practice test here uses the same pass mark.
Which tests does this cover?
General Knowledge, Air Brakes and Combination Vehicles: the three knowledge tests for a Class A license. Endorsement tests such as hazardous materials, tank vehicles and passenger transport are not covered.
Is my progress saved?
Your scores and missed questions are kept in this browser only. They do not sync between devices, and clearing browser data removes them.