CertReady
Commercial DrivingFederal certification87 free questions

Free CDL Practice Test

95 original practice questions across 6 sections. 87 are free, no account needed.

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How this practice test is set up

CDL knowledge tests are 80% to pass, scored one test at a time. Most states use 50 questions for General Knowledge (40 correct), 25 for Air Brakes, 20 for Combination Vehicles, and 20–30 for endorsements.

CertReady’s bank is original practice on those topics — space and hours of service in General Knowledge, 60 psi and spring brakes in Air Brakes, coupling and off-tracking in Combination, placards, surge and passenger railroad stops. It is not a Georgia-only or California-only quiz; the federal manual is the same, and we add state landing pages for booking.

Start with a 10-question mixed set. Drill a weak category. Sit the timed mock (50 questions / 50 minutes) when category scores are 85%+.

Quick practice

10 mixed questions with instant feedback. Good for a daily warm-up.

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Practice by topic

Drill one section at a time until you consistently score above 80%.

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Random practice

Pick your own question count and difficulty for a longer session.

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Timed mock exam

50 questions in 50 minutes with a category breakdown at the end.

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What's free and what's premium

  • Practice sets of up to 10 questions from the 87 free questions, with full explanations.
  • Free accounts can complete 2 mock exams per certification; visitors without an account get a shorter 10-question sample.
  • Premium (coming soon) unlocks the full bank of 95 questions, unlimited mocks and detailed analytics.