- Updated for January 2025
- Based on 2025 NY commercial driver's license manual
Free New York CDL Air Brakes Test 2025
This is your opportunity to take a practice exam that will prepare you for the real New York DMV air brakes exam. Passing the DMV exam will open up new possibilities for your career as you will then be able to drive vehicles that have air brakes, from a wide range of trucks to passenger buses. The 30 multiple-choice questions on this practice exam are based directly on those found in the New York State DMV Commercial Driver’s Manual, so make sure that you read each explanation carefully, as they are designed to give you the information you need to answer future questions correctly on your real DMV air brakes exam. Practice as often as necessary, until you both achieve a high score and feel comfortable with the subject matter. Then in no time at all, you’ll pass the real CDL air brakes exam with ease. Good luck and drive safely!
- Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
- Triple-checked for accuracy
What you need to know
What to expect on the actual NY DMV exam
questions
correct answers to pass
passing score
Helpful links
List of questions (classic view)
- When should you use the parking brake?
- At what measurement is the safety valve USUALLY set to open?
- After the initial drop, the maximum acceptable leakage rates per minute are
- What is the best way to test your vehicle's low air pressure warning signal?
- How would you check your truck's slack adjusters?
- Which of the following is NOT part of the braking process when you're driving a tractor-trailer combination vehicle with an antilock braking system (ABS)?
- If the air tanks are not drained,
- Why must you pass a knowledge test on air brakes?
- Which vehicles must have low air pressure warning signals?
- Slack adjusters are
- How can you tell if your vehicle is equipped with an antilock braking system (ABS)?
- The tractor protection valve
- An antilock braking system (ABS)
- Which of the following is NOT part of the air brake system?
- Which of the following is NOT part of the drum brake?
- Which of the following will be true about your brake function if your antilock braking system (ABS) fails?
- How do brakes work on a long, steep downgrade?
- Which of the following can cause brakes to fade or fail?
- When should you drain your air tanks?
- Which of the following are true about a dual air brake system?
- Spring brakes are
- Which of the following should you do before leaving your vehicle unattended?
- The purpose of a supply pressure gauge is
- What is the best way to test if your vehicle's spring brakes come on automatically?
- Under which conditions are front wheel brakes good?
- The low air pressure warning signal will come on before the pressure in the air tanks falls below
- A low pressure warning signal is required on
- All vehicles equipped with air brakes have
- With air brake-equipped vehicles, the parking brakes should be used
- The use of air brakes on a downgrade is only a supplement to the
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We leverage feedback from our vast community of users to understand which topics are most frequently tested. This helps us focus on the areas that are most relevant and beneficial for your preparation. - Expert Content Creation:
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