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- Updated for December 2024
- Based on 2024 WV commercial driver's license manual
Free West Virginia CDL Air Brakes Test 2024
Today is your opportunity to not only become a safer commercial driver, but to also become a a more prepared and less restricted driver in the state of West Virginia. Having a West Virginia CDL that allows you drive vehicles with air brakes will broaden your options, and you will be able to drive a much wider range of commercial vehicles. This 30-question practice exam, which is written with information directly from the West Virginia DMV Commercial Driver’s License Manual, will allow you to learn the subject material, become a safer driver, and get familiar and comfortable with the exam format (multiple-choice). Soon, you will be receiving a passing score on your air brakes exam and you will be on your way to becoming a safer, more varied West Virginian CDL holder. 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 WV DMV exam
questions
correct answers to pass
passing score
List of questions (classic view)
- 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)?
- How would you check your truck's slack adjusters?
- At what measurement is the safety valve USUALLY set to open?
- How do brakes work on a long, steep downgrade?
- When should you drain your air tanks?
- Which of the following will be true about your brake function if your antilock braking system (ABS) fails?
- When should you use the parking brake?
- Which of the following should you do before leaving your vehicle unattended?
- Which of the following are true about a dual air brake system?
- How can you tell if your vehicle is equipped with an antilock braking system (ABS)?
- If the air tanks are not drained,
- Spring brakes are
- Which of the following is NOT part of the air brake system?
- What is the best way to test if your vehicle's spring brakes come on automatically?
- Slack adjusters are
- An antilock braking system (ABS)
- Which of the following is NOT part of the drum brake?
- What is the best way to test your vehicle's low air pressure warning signal?
- Which of the following can cause brakes to fade or fail?
- The purpose of a supply pressure gauge is
- The tractor protection valve
- Which vehicles must have low air pressure warning signals?
- Under which conditions are front wheel brakes good?
- After the initial drop, the maximum acceptable leakage rates per minute are
- Why must you pass a knowledge test on air brakes?
- 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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