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Based on official Missouri exam questions

MO CDL Air Brakes Practice Test 2025

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements.

Be sure not to make the mistake of going to the DOR to get your Missouri Air Brakes endorsement without doing practice tests first. Practicing will give you the confidence and knowledge you need to move through the test with ease. Then, you will be certain to receive your endorsement and further your career. Your endorsement will open up opportunities that have been closed previously. Keep in mind it all starts with your endorsement, and a practice test makes it much easier to get that endorsement.

Things to Expect with the Practice Test

Due to the fact that the Missouri Air Brakes practice test is designed from the official Missouri CDL manual, the questions closely resemble the questions you will find on the authorized CDL test. The wording might be somewhat different, but the meaning remains the same. The practice test has 25 questions. Once you master these questions, you will be ready to move onto the official CDL test at the DOR.

As you take the test, it is a good idea to make a note of the questions that you have problems with so you can study them after you complete the practice test. That way, you will be able to improve before you have to take the official test. Then, go back and retake the test to see if you get those answers right. Continue to do this until you are ready to take the actual thing.

Getting Ready on Test Day

When test day finally arrives, you might have some jitters. That is ok, but don’t let your nerves overwhelm you. The best thing to do is to take your Air Brakes practice test one more time. Then, you will remember that you have the knowledge necessary to ace your test. Sometimes, a boost of confidence is all that you need to bring home your MO Air Brakes endorsement.

Good luck on your practice test, and remember, you can take it as many times as you would like. Don’t rush the process. The practice test is here to help you as you move closer to getting your endorsement. Use it as a tool to help you achieve your goals.

7 min to complete
Available in EN and ES
MO commercial driver's license
Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives
This test is a Premium member exclusive. You'll get

All 650 exam-like questions specific to Missouri

Interactive learning with AI personal tutor

Unique 360° Virtual Road Simulations

Get your money back if you don’t pass

Verified for accuracy: October 2025

Reviewed by Steven Litvintchouk, M.S.
Chief Educational Researcher (ACES member)
Methodology & Editorial Policy

What to expect on the actual MO exam

25

questions

20

correct answers to pass

80%

passing score

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