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California DMV CDL General Knowledge Practice Tests

The general knowledge test every commercial driver license applicant takes. Practice with 5 tests built like the real California exam, then try the full simulation.

459 practice questions: California law plus the rules that apply in every state.

A coastal highway along cliffs above the Pacific Ocean, a typical landscape of California

California CDL practice tests

California CDL exam simulator

Answer at your own pace. After each question you see the correct answer and why, and at the end a review of what you missed.

  • Random practice: 20 random questions; pass with 16 correct, the same ratio as the real test.
  • Exam simulation: 50 questions and a pass mark of 40, like the California CDL test.

About the California CDL test

General knowledge test for a commercial learner's permit. The minimum age of 18 and the limit of three attempts per application are confirmed in the California Commercial Driver Handbook; the question count and passing margin are not published officially.