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Practice test 10 of 10

Oregon CDL — Air Brakes Practice Test 10

The Oregon 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.Which foundation brake design is found most often at each wheel of an air-brake vehicle?
  2. 2.In a vehicle without ABS, locking the front (steering) wheels during a hard stop will:
  3. 3.Before driving a vehicle with a dual air brake system, you should let the compressor build a minimum of:
  4. 4.Air brakes add which element to total stopping distance that hydraulic brakes do not have?
  5. 5.On large buses, low-pressure warning devices commonly signal at about:
  6. 6.Why should you avoid stepping on the brake pedal while the spring brakes are already applied?
  7. 7.If you need steadily more application pressure just to hold the same speed on level ground, the brakes are most likely:
  8. 8.When should you NOT rely on the parking brakes to hold the vehicle?
  9. 9.Why can a heavily loaded vehicle take a long distance to stop once the spring brakes apply on their own?
  10. 10.Truck tractors with air brakes must be equipped with antilock brakes if built on or after:

0 of 25 answered