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Practice test 2 of 10

Hawaii CDL — Air Brakes Practice Test 2

The Hawaii 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.What does the manual say about how wedge-type brakes are kept in adjustment?
  2. 2.Why does the manual tell you to check brake adjustment often?
  3. 3.For the Z restriction, how does the manual define air over hydraulic brakes?
  4. 4.The manual gives one air pressure buildup standard for dual air systems and another for pre-1975 single systems. Which one is the dual-system standard?
  5. 5.One half of a dual air brake system typically handles the service brakes at the front axle. What else may that same half operate?
  6. 6.How does the manual say an air compressor may be kept cool?
  7. 7.On the vehicle inspection test, how many axles should you be ready to cover with the brake component checks?
  8. 8.During the final air brake check, the governor does not cut the compressor in and out the way it should. Why does the manual treat that as a safety problem?
  9. 9.You climb into an unfamiliar air-braked truck and cannot find an application pressure gauge. What does the manual say about that?
  10. 10.Which of these is NOT a kind of low air pressure warning the manual describes?

0 of 25 answered