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Practice test 9 of 10

Kentucky CDL — Air Brakes Practice Test 9

The Kentucky 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.When should you avoid setting the parking brakes?
  2. 2.Below what tank pressure must the low air pressure warning signal come on?
  3. 3.Using the proper downhill braking technique, how long should each brake application last?
  4. 4.On a vehicle with an application pressure gauge, needing more and more pressure to hold a steady speed indicates what?
  5. 5.Describe the "stab braking" method for an emergency stop.
  6. 6.On a tractor or straight truck, spring brakes come fully on when air pressure drops into what range?
  7. 7.An air brake setup is really made up of which three braking systems working together?
  8. 8.In an s-cam drum brake, what happens when you press the brake pedal?
  9. 9.On a tractor, truck, or bus, where is the ABS malfunction lamp located?
  10. 10.At roughly what tank pressure does the governor reach cut-out and stop the compressor from pumping?

0 of 25 answered