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Practice test 10 of 10

Utah CDL — Air Brakes Practice Test 10

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.Compared with a car's hydraulic brakes, how quickly do air brakes respond?
  2. 2.The visible low-air warning must switch on before tank pressure drops below what level?
  3. 3.Why should you avoid pressing the brake pedal while the spring brakes are already applied?
  4. 4.On a newer air-brake vehicle, how do you set the parking brakes?
  5. 5.Only the trailer in your combination is equipped with antilock brakes. What should you expect while braking?
  6. 6.An air brake setup actually combines how many separate braking systems into one?
  7. 7.Which of these is required equipment on every vehicle with air brakes?
  8. 8.What does a supply pressure gauge tell the driver?
  9. 9.During the last part of the air-brake check, how do you prove the spring brakes will set by themselves?
  10. 10.During stab braking, when should you reapply the brakes after releasing them?

0 of 25 answered