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Practice test 9 of 10

Utah CDL — Air Brakes Practice Test 9

The Utah 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 can happen to drum brakes if they absorb more heat than they can handle?
  2. 2.With the engine off and the parking brake released, a single vehicle's air-loss rate should stay under what?
  3. 3.Why shouldn't you keep driving until the spring brakes engage on their own?
  4. 4.You have driven through deep standing water and your brakes are soaked. What is the recommended way to dry them?
  5. 5.How can you tell whether your vehicle came from the factory equipped with ABS?
  6. 6.Why should you avoid pressing the brake pedal while the spring brakes are already applied?
  7. 7.During the last part of the air-brake check, how do you prove the spring brakes will set by themselves?
  8. 8.At 55 mph on dry pavement, roughly how much extra distance does air brake lag add?
  9. 9.For an average driver at 55 mph in good conditions, an air-brake vehicle's total stopping distance is about what?
  10. 10.How large a crack in a brake drum makes it unsafe to keep in service?

0 of 25 answered