Back to all tests Score Page Restart
Back to all tests

Your Progress

  • 0 Incorrect (6 allowed to pass)
  • 0 Correct
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
View Handbook
  • 0 Incorrect (6 allowed to pass)
  • 0 Correct
Restart
 
 
 
 
 
Ask DMV Genie AI
new
Back to Program Home
  • Updated for October 2024
  • Based on 2024 KY commercial driver's license manual

Free Kentucky CDL Air Brakes Test 2024 | KY

The best way to pass the Kentucky CDL air brake exam is to practice early and often. The best way to practice is with a practice exam written specifically with the questions that the Kentucky Commercial Driver License Manual states that you need to know. The following 30 multiple-choice questions is based on these questions and other important material featured in your manual. Use the hint provided with each questions if you need it, and read each explanation so that you are prepared for future questions on your real examination. Practice until you achieve a score that you feel confident in, and good luck on the road to safer air brake driving!

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 KY KSP exam

25

questions

20

correct answers to pass

80%

passing score

List of questions (classic view)

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

Your go-to, trusted source

Experience the Driving-Tests difference
Since our foundation in 2010, Driving-Tests.org has led the way in online driver's education, with over a decade of experience. Our dedicated experts, bringing together more than 50 years of collective expertise, have established us as the largest non-governmental organization in the U.S. solely focused on driver education. We go beyond the official manuals, offering unique interactive experiences and support like audio guides and an AI Assistant, to cater to different learning styles and needs.
Helping hundreds of thousands to ace their tests, our resources have earned a 4.7-star rating from over 14,500 reviews. Our goal is to make your path to becoming a confident driver as straightforward and effective as possible.