Trivia Quiz: Take The CDL Air Brakes Endorsement Practice Test!

2 Questions | Total Attempts: 8480

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Air Brake Quizzes & Trivia

These questions are taken from actual CDL licensing tests. If you can reliably pass this practice test, you will have no trouble passing the real test.


Questions and Answers
  • 1. 
    Why must air tanks be drained?
    • A. 

      To drain all the air out of the tank.

    • B. 

      To drain moisture and oil out of the tank.

    • C. 

      To keep anyone from moving the vehicle.

    • D. 

      To prevent leakage

  • 2. 
    What is a supply pressure gauge used for?
    • A. 

      To tell you how much diesel is in the vehicle.

    • B. 

      To tell you how much water is in the air tank.

    • C. 

      To tell you how much air is in the air tank.

    • D. 

      To tell you how much air is in the tires.

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