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Colorado DMV CDL General Knowledge Practice Tests

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

450 practice questions: Colorado law plus the rules that apply in every state.

A mountain road through the Rocky Mountains with aspen trees, a typical landscape of Colorado

Colorado CDL practice tests

Colorado 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 Colorado CDL test.

About the Colorado CDL test

Commercial written knowledge test, available in English and Spanish, required before the commercial learner's permit is issued. The minimum age of 18 and the language availability are confirmed by the Colorado DMV; the question count and passing margin are not published officially.