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Practice test 5 of 10

Louisiana CDL — Air Brakes Practice Test 5

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.Using the proper downhill braking method, when should you release the brakes?
  2. 2.On newer air-brake vehicles, how do you apply the parking brakes?
  3. 3.With manually operated tank drain valves, how often must you drain the tanks?
  4. 4.Which statement about front wheel braking is true?
  5. 5.When going down a long, steep grade, the service brakes should be used in what way?
  6. 6.During inspection, a brake drum must not have a crack longer than what?
  7. 7.Air brakes are actually made up of which three separate braking systems?
  8. 8.If the air compressor has its own supply of oil, what should you do before driving?
  9. 9.How does the emergency brake system stop a vehicle when the brakes fail?
  10. 10.How do you test the service brakes as part of the final air brake check?

0 of 25 answered