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CDL Practice Test

Every CDL applicant takes the General Knowledge test, plus a knowledge test for each vehicle type and endorsement they need; you need at least 80 percent correct on each. Each practice test below has original questions from one knowledge test, each with the answer and an explanation.

Source: 49 CFR Part 383 (FMCSA) and the AAMVA model CDL manual.

  • 8 tests
  • 200 questions
  • Free to use, no sign up

Practice tests by knowledge test

Study the topics first

The CDL study guide has 50 lessons that follow the same knowledge tests.

Open the CDL study guide

Practice the full CDL bank.

2,689 questions with explanations, timed section tests and an AI tutor, plus the study guide. Your account opens right after payment.

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Every plan is one payment. No subscription, no auto-renewal.

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Included: an explanation for every question, the Study Guide with 50 audio lessons, an AI tutor to ask why on any question, timed section tests and progress by topic.

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Questions, answered

Are these actual CDL questions?

No. They are original practice questions written from the public exam outline, not questions taken from the exam. Exam owners keep live questions confidential.

What score do you need to pass the CDL knowledge test?

At least 80 percent correct on each knowledge test, under federal rules (49 CFR 383.135). The number of questions on each test varies by state. Source: 49 CFR Part 383 (FMCSA) and the AAMVA model CDL manual.

Is this CDL practice test free?

Yes. All 8 tests, 200 questions in total, are free to use with answers and explanations, and there is no sign up. The full bank of 2,689 questions comes with a plan.

Where should I start?

Start with the knowledge test you find hardest. Each test covers one knowledge test, so a low score shows where to spend your study time.

These are original practice questions written from the public exam outline. They are not actual exam questions. CDL knowledge tests are given by state driver licensing agencies under federal rules (49 CFR Part 383). tests.global is not affiliated with or endorsed by AAMVA, FMCSA or any state licensing agency.

Updated October 30, 2026.