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Practice test 7 of 10

Oregon CDL — Air Brakes Practice Test 7

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.Before walking away from a truck you will leave unattended, the handbook requires you to:
  2. 2.Since which year have all vehicles been built with automatic slack adjusters?
  3. 3.If you need steadily more application pressure just to hold the same speed on level ground, the brakes are most likely:
  4. 4.About how much distance does air brake lag add at 55 mph on dry pavement?
  5. 5.Which foundation brake design is found most often at each wheel of an air-brake vehicle?
  6. 6.In a vehicle without ABS, locking the front (steering) wheels during a hard stop will:
  7. 7.What does the stop light switch do on an air brake system?
  8. 8.A supply pressure gauge on the dash reports which of the following?
  9. 9.Why can a heavily loaded vehicle take a long distance to stop once the spring brakes apply on their own?
  10. 10.During the final brake check, the governor should stop the compressor from pumping at about:

0 of 25 answered