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Practice test 3 of 10

Louisiana CDL — Air Brakes Practice Test 3

The Louisiana CDL — Air Brakes knowledge test has ~25 questions; you need ~20 correct (80%) to pass.

This practice test follows that format: 25 questions, pass with 20 correct. Answer every page, then grade it to see the answers and explanations.

Questions 1–10 of 25

  1. 1.On newer air-brake vehicles, how do you apply the parking brakes?
  2. 2.Why should you avoid pressing and releasing the brake pedal more than necessary?
  3. 3.At about what pressure does the governor tell the compressor to stop pumping air?
  4. 4.Why should you avoid pressing the brake pedal while the spring brakes are applied?
  5. 5.In a dual air system, if one of the two systems gets very low on pressure, what happens?
  6. 6.Before driving a vehicle with a dual air system, the compressor should build a minimum of what pressure in both systems?
  7. 7.Which statement about front wheel braking is true?
  8. 8.Why does a heavily loaded vehicle need a long distance to stop once the spring brakes come on?
  9. 9.If your ABS stops working, what happens to your braking?
  10. 10.When should you NOT use the parking brakes?

0 of 25 answered