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  • Updated for October 2024
  • Based on 2024 KS commercial driver's license manual

Free Kansas CDL Air Brakes Test 2024 | KS

Today, you will have an opportunity to practice for Kansas’ CDL air brake exam, with questions carefully based on the Kansas Commercial Driver License Manual. Each of these multiple-choice questions is meant to simulate the kind of question that you will face on the real examination. However, our questions each include a hint and an explanation so that you can learn more about the subject matter and be able to answer questions in the future about the same topics that may be worded differently. Read the explanations carefully, practice as often as you need to until you feel comfortable, and good luck on your upcoming air brake exam!

Commercial Driver's License
  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
  • Triple-checked for accuracy

What you need to know

9 min to complete
Available in EN and ES
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
Ensuring the accuracy and quality of our program is paramount. Learn more about our rigorous standards in our Commitment to Accuracy article.

What to expect on the actual KS DMV exam

25

questions

20

correct answers to pass

80%

passing score

List of questions (classic view)

  1. How would you check your truck's slack adjusters?
  2. Under which conditions are front wheel brakes good?
  3. Which of the following can cause brakes to fail or fade?
  4. The tractor protection valve
  5. When should you use the parking brake?
  6. After the initial drop, the maximum acceptable leakage rates per minute are
  7. How do brakes work on a long, steep downgrade?
  8. Which vehicles must have low air pressure warning signals?
  9. If the air tanks are not drained,
  10. How can you tell if your vehicle is equipped with an anti-lock braking system (ABS)?
  11. Which of the following is NOT part of the braking process when driving a tractor-trailer combination vehicle with an anti-lock braking system (ABS)?
  12. Which of the following are true about a dual air brake system?
  13. Why must you study air brakes in the state of Kansas?
  14. Slack adjusters are
  15. Which of the following is NOT part of the drum brake?
  16. What is the best way to test if your vehicle's spring brakes come on automatically?
  17. Which of the following should you do before leaving your vehicle unattended?
  18. Spring brakes are
  19. When should you drain your air tanks?
  20. An anti-lock braking system (ABS)
  21. What is the best way to test your vehicle's low air pressure warning signal?
  22. At what measurement is the safety valve USUALLY set to open?
  23. Which of the following will be true about your brake function if your anti-lock braking system (ABS) fails?
  24. Which of the following is NOT part of the air brake system?
  25. The purpose of a supply pressure gauge is
  26. The low air pressure warning signal will come on before the pressure in the air tanks falls below
  27. A low pressure warning signal is required on
  28. All vehicles equipped with air brakes have
  29. With air brake-equipped vehicles, the parking brakes should be used
  30. The use of air brakes on a downgrade is only a supplement to the
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