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CDL Knowledge Test retake planner

Rate how each official test went on your last attempt. You get a retake plan weighted by the official outline, with the tests you found hardest first and a schedule for every week until your retake.

Build my retake plan

Step 1 of 2

Rate how each test went

Rate how each test went on your last attempt. If your score report shows results by test, use them; the planner doesn't need exact scores. So the priorities in your plan come from your own answers, not from an official score.

The 8 official tests

Leave a test blank if you’re not sure. Blank ones keep their official share with a little extra time; the planner never guesses.

General Knowledge100% of the exam
Air Brakes100% of the exam
Combination Vehicles100% of the exam
Doubles/Triples100% of the exam
Tank Vehicles100% of the exam
Hazardous Materials100% of the exam
Passenger100% of the exam
School Bus100% of the exam

0 of 8 tests rated

Step 2 of 2

Add your dates and the time you have

Used only to check the earliest retake date against the official waiting rule.

No federal waiting period; your state sets retest waits, fees, and limits, and must give a different version of a failed test. 49 CFR 383.133 and 383.135

Your answers stay in this browser tab. Passy records only that a plan was built, never your ratings or dates.

How the plan sets your priorities

Rate how each test went on your last attempt. If your score report shows results by test, use them; the planner doesn't need exact scores. So the planner asks you instead: the tests you mark as hard start your plan, mixed ones are strengthened, and confident ones get lighter review. Your answers are a self-assessment, not an official result.

Each test starts from its share of the exam in the official outline, multiplied by its priority: 3× to start, 2× to strengthen, 1.5× if you leave it blank, and 1× to maintain. A quarter of your time is mixed practice across all tests. This is Passy’s planning method; it doesn’t estimate a score or a chance of passing.

Retake rules for the CDL

No federal waiting period; your state sets retest waits, fees, and limits, and must give a different version of a failed test.

  • 49 CFR 383.133(b)(4): a different test version on retake.
  • The CLP must be held 14 days before the skills test (383.25(e)) and is valid up to one year without retaking the knowledge tests (383.25(c)).
  • Failing Air Brakes leads to an air brake restriction; failing Combination Vehicles bars a Group A permit or license.

Checked against official sources on October 24, 2026.

Next steps

Check your weakest test with the free CDL practice set, or use the CDL study planner for a first attempt.

Passy is not affiliated with, endorsed by, or approved by FMCSA, the U.S. Department of Transportation, AAMVA, or any state driver licensing agency. States administer the CDL tests and set their own procedures. Passy practice is original study material and contains no state or AAMVA test items or text from state CDL manuals.