Free CDL Practice Test (2026)
255 practice questions written from the official CDL manual — with a plain-English explanation for every answer. No sign-up, works on your phone, and honest about what it is: study practice, not the real exam.
Choose a practice test
- 60 questionsGeneral KnowledgeThe core test every CDL applicant takes — vehicle inspection, safe driving, and control.
- 40 questionsAir BrakesRequired to remove the L restriction and drive vehicles with air brakes.
- 30 questionsCombination VehiclesRequired for a Class A CDL — coupling, uncoupling, and driving tractor-trailers.
- 30 questionsHazardous Materials (H)Knowledge test for the hazmat endorsement (a TSA background check is also required).
- 25 questionsTank Vehicles (N)Knowledge test for the tanker endorsement — surge, load limits, and inspection.
- 25 questionsPassenger (P)Knowledge test for the passenger endorsement — buses and passenger safety.
- 25 questionsSchool Bus (S)Knowledge test for the school bus endorsement — loading, unloading, and student safety.
- 20 questionsDoubles/Triples (T)Knowledge test for the doubles/triples endorsement — coupling and handling multiple trailers.
How to use these practice tests
- Practice mode shows the correct answer and explanation after each question — best for learning.
- Exam-simulation mode is timed and shows results at the end — best for checking readiness.
- Missed questions come back with their explanations so you can focus your study.
- Everything runs in your browser. We store nothing about you.
Which tests do I need?
Every CDL applicant takes General Knowledge. Add Air Brakes to drive most large trucks, and Combinationfor a Class A. Then practice for any endorsement you want — see the endorsements guidefor what each one requires.
Practice test FAQ
Are these real CDL exam questions?
No. These are practice questions written from scratch based on the official, public-domain CDL manual. Real exam questions are confidential. Practicing here is great preparation, but the state exam is the authority — and passing here doesn't guarantee passing your test.
Is the practice test really free?
Yes. No sign-up, no account, no payment, and we collect no personal information. Your progress stays in your browser.
Which practice test should I take first?
Start with General Knowledge — every CDL applicant takes that test. Add Air Brakes (needed to drive most large trucks) and Combination if you're going for a Class A. Then take the practice test for any endorsement you want, like hazmat or passenger.
How many questions do I need to get right?
Most states require about 80% to pass each knowledge test (often 40 of 50, or similar). Our exam-simulation mode shows your percentage so you can gauge readiness, but check your own state's passing score.