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Practice test 8 of 10

Maryland CDL — Air Brakes Practice Test 8

The Maryland 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 dual air brake system, which brakes does the primary system typically operate?
  2. 2.How do air brakes actually bring a heavy vehicle to a stop?
  3. 3.On a dual air brake vehicle, how much pressure should the compressor build in both systems before you drive?
  4. 4.How is the stab braking method carried out in an emergency stop?
  5. 5.Where is the yellow ABS malfunction lamp located on a trailer?
  6. 6.Why does correct brake adjustment matter so much to the emergency and parking brake function?
  7. 7.Why should you avoid pushing the brake pedal down while the spring brakes are already applied?
  8. 8.While a vehicle is being driven normally, what holds the powerful springs of the spring brakes back?
  9. 9.Which type of foundation brake is the most common on air brake vehicles?
  10. 10.At about what pressure does the governor normally stop the compressor from pumping (the cut-out point)?

0 of 25 answered