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Practice test 5 of 10

Tennessee CDL — Air Brakes Practice Test 5

The Tennessee 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 is the main job of an antilock braking system (ABS)?
  2. 2.When making a normal stop with a manual transmission, when should you push in the clutch?
  3. 3.What is a dual air brake system?
  4. 4.What can happen if you press and release the brake pedal more than necessary?
  5. 5.What happens to a brake drum if the brakes are used so hard and so long that they overheat?
  6. 6.An air brake setup is really a combination of three braking systems. Which trio is correct?
  7. 7.Why is it important to drain the water that collects in the air tanks?
  8. 8.What does the service brake system do?
  9. 9.According to the manual, what is the most common problem found during roadside inspections?
  10. 10.When should you NOT use the parking brakes to hold the vehicle?

0 of 25 answered