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Practice test 4 of 10

Nebraska CDL — Air Brakes Practice Test 4

The Nebraska 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.The manual calls air brakes a good, safe way to stop large and heavy vehicles. What two conditions does it attach to that statement?
  2. 2.When does ABS step in on an air-braked vehicle?
  3. 3.What happens at the brakes when you push the brake pedal of an air-braked vehicle down harder?
  4. 4.Nebraska's 'Preparing for Your Brake Check' page lists the four parts of the Air Brake Check. Which of these is NOT one of them?
  5. 5.In the first part of Nebraska's Air Brake Check you build air pressure up to governor cutoff. What else does the Nebraska Specifics page expect you to do at that point?
  6. 6.Your low air pressure warning comes on while you are driving. The manual tells you to stop and park safely as soon as possible. What does it suggest might be wrong?
  7. 7.The manual's braking technique for long downgrades assumes one thing has already been done. What is it?
  8. 8.At operating rpm, your dual air system with minimum-size tanks takes about 70 seconds to climb from 85 to 100 psi. How does that compare with the manual's standard?
  9. 9.Where does the manual say a trailer's yellow ABS malfunction lamp is mounted?
  10. 10.Air brakes are really three braking systems. Which pairing of a system with the way the driver works it matches the manual?

0 of 25 answered