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Practice test 8 of 10

Oregon CDL — Air Brakes Practice Test 8

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.In a vehicle without ABS, locking the front (steering) wheels during a hard stop will:
  2. 2.During a normal stop with a manual transmission, you should press the clutch only when:
  3. 3.What does the stop light switch do on an air brake system?
  4. 4.The single most frequently found brake defect during roadside inspections is:
  5. 5.The emergency and parking brakes are held on by mechanical force rather than air because:
  6. 6.On a long, steep downgrade, the wheel brakes should be used mainly to:
  7. 7.To set the parking brakes on a newer air-brake vehicle, you:
  8. 8.In controlled braking during an emergency, how hard do you press the brakes?
  9. 9.What physically causes brake fade when the brakes overheat?
  10. 10.Front brake limiting valves were installed on some vehicles built before which year?

0 of 25 answered