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Practice test 2 of 10

Florida CDL — Air Brakes Practice Test 2

The Florida 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.You are about to park for the night in freezing weather, and your brakes are soaking wet from slush. What does the handbook suggest doing first?
  2. 2.Roadside inspectors most often place air-braked vehicles out of service for which brake problem?
  3. 3.Why should you avoid pressing the brake pedal down while the spring brakes are applied?
  4. 4.Most newer heavy vehicles are built with dual air brake systems. What does that mean?
  5. 5.The yellow ABS malfunction lamp stays lit after the start-up bulb check and is still on once you are rolling. What does that tell you?
  6. 6.Why must air storage tanks be drained regularly if they only have manual drain valves?
  7. 7.In Florida, what happens to your CDL if you pass the skills test in a truck that does not have a full air brake system?
  8. 8.You are stab braking during an emergency stop and the wheels lock up. When do you put the brakes back on?
  9. 9.Continuing to fan off air pressure with the key on, you watch for the parking brake knob to pop out on its own. In what pressure range should the spring brakes come on?
  10. 10.What is the main cause of brake fade on a downhill run?

0 of 25 answered