Free CDL practice tests and study guides
Practice tests built from the official CDL manual, with every answer explained. Free, for every state and Washington, D.C.
Picks up where you left off on this device.
- No account needed
- Every answer explained
- Built from the official CDL manual
Why study with CDL Study
Free CDL test practice
Every practice test, course and flashcard deck is free. Start at test 1 or jump to the topic you need.
No sign-up required
Practice straight away. Progress on this device is kept for 30 days.
An exam simulator that feels familiar
Mixed tests draw from every topic like the real knowledge test, with an explanation for each answer.
CDL Study is a free website for people preparing for the commercial driver's license knowledge tests. We write original lessons from the official CDL manual and the federal regulations, build practice questions around them, and collect each state's licensing facts from official agency pages. Every practice test is free, and no account is needed to start.
How to study for the CDL with this site
- Check your state's rules: fees, permit steps, waiting periods and which tests your state gives.
- Learn the material with a free course for your license class or endorsement, or read the topic lessons on their own.
- Take the numbered practice tests for each topic. Every answer is explained.
- Finish with mixed Class A or Class B tests in simulation mode, and review your weak topics with flashcards.
What the tests cover
Every applicant takes the general knowledge test. Class A adds the combination vehicles test, and either class adds air brakes if you will drive a vehicle with air brakes. Each endorsement (hazmat, tanker, passenger, school bus, doubles and triples) has its own test. The topics are the same nationwide because states build their tests from the same federal knowledge requirements. Not sure which class you need? Read Class A vs Class B or the full guide to getting a CDL.
Independent study aid
CDL Study is not affiliated with FMCSA, any state licensing agency or any training provider. We do not issue licenses, deliver entry-level driver training or certify anything. Our questions are original study material, not official test items, and practicing here does not guarantee a passing score. Always confirm procedures with your state agency.
