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Practice test 3 of 10

New Mexico CDL — Air Brakes Practice Test 3

The New Mexico 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.A truck tractor and a semitrailer, both with air brakes, were each built in July 1997. Going by the manual's dates, which of them was required to have ABS when it was built?
  2. 2.The Step 7 check times air leakage twice, once with the brakes released and once with the foot brake held down. What do the two tests have in common?
  3. 3.During the Step 7 leakage test the pressure drop is more than the manual allows, and the driver decides to deal with it after the day's run. What does the manual warn could happen?
  4. 4.Section 5 lists the checks that make up the Step 7 final air brake check. Which one does it list first?
  5. 5.On the vehicle inspection test, how much play at the center of the air compressor belt does Section 11 count as snug?
  6. 6.How many components does New Mexico's manual say make up the air brake check on the vehicle inspection test, and what follows if they are not all performed correctly?
  7. 7.Several figures in Section 5 carry a reminder to check the manufacturer's specifications. Which of these does the section state as a fixed limit, with no such reminder?
  8. 8.A bus has dual parking control valves. At the end of a run, which of the two does the manual assign to setting the spring brakes when you park?
  9. 9.You have just finished inspecting the brake components at one axle on the vehicle inspection test. What does the note in Section 11 tell you to be ready for?
  10. 10.An applicant passes the air brakes knowledge test, then takes the CDL skills test in a truck that has hydraulic brakes. What does Section 1 say about the L restriction?

0 of 25 answered