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Practice test 4 of 10

Nevada CDL — Air Brakes Practice Test 4

The Nevada 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.Which sequence matches the manual's service brake test for an air-braked vehicle?
  2. 2.Over one week you drive three tractor-trailers: one with ABS only on the tractor, one with ABS only on the trailer, and one with ABS on both. How should your braking technique change from rig to rig?
  3. 3.In the Nevada manual's suggested air brake check, you keep pumping the foot brake to bring pressure down toward roughly 20 to 40 psi. What are you watching for at that stage?
  4. 4.In a typical dual air brake truck, you notice the secondary system's pressure sinking while the primary holds steady. Which brakes are probably not working fully, and what should you expect?
  5. 5.Which rule does the manual give for leaving an air-braked vehicle unattended?
  6. 6.Brakes are built to absorb a lot of heat. On a long downgrade, what does the manual say pushes them into fading or failing?
  7. 7.On dry pavement at 55 mph, about how much distance does air brake lag alone add to a stop?
  8. 8.You're several hours into a trip in an air-braked truck. Which gauge does the manual list, for air brake vehicles, among the instruments to keep checking while you drive?
  9. 9.In an air brake system, where are the foundation brakes found?
  10. 10.Your trailer has ABS, but your tractor does not. During a hard stop, the tractor starts to jackknife. What should you do?

0 of 25 answered