List for CDL question Air brakes Section

These questions may be on your test. If you can’t
answer them all, Re-read your state CDL Manual ( Air Brakes Section)

  1. Why must air tanks be drained?
  2. What is a supply pressure gauge used for?
  3. All vehicles with air brakes must have a low
    air pressure warning signal. True or False?
  4. What are spring brakes?
  5. Front wheel brakes are good under all
    conditions. True or False?
  6. How do you know if your vehicle is
    equipped with antilock brakes?
  7. What is a dual air brake system?
  8. What are the slack adjusters?
  9. How can you check slack adjusters?
  10. How can you test the low pressure warning
    signal?
  11. How can you check that the spring brakes come
    on automatically?
  12. What are the maximum leakage rates?
  13. Why should you be in the proper gear before
    starting down a hill?
  14. What factors can cause brakes to fade or fail?
  15. The use of brakes on a long, steep downgrade
    is only a supplement to the braking effect of
    the engine. True or False?
  16. If you are away from your vehicle only a short
    time, you do not need to use the parking
    brake. True or False?
  17. How often should you drain air tanks?
  18. How should you brake when you drive a
    tractor-trailer combination with ABS?
  19. You still have normal brake functions if your
    ABS is not working. True or False?

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