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Practice test 2 of 10

Wyoming CDL — Air Brakes Practice Test 2

The Wyoming 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.Section 11M has you look for fluid and air leaks at the front of the vehicle with the engine off. Why does it say an air leak matters?
  2. 2.Section 11M explains why the air lines running to a trailer are inspected. What does it say a low air condition in those lines will cause?
  3. 3.Which statement about automatic slack adjusters does NOT match the manual?
  4. 4.Which part of an air brake system is an electric switch that air pressure operates?
  5. 5.For the parking brake check in Section 11M, you engage the parking brake and gently pull forward against it. What does the manual have you do with the service brake first?
  6. 6.The air brake section adds its own items to the seven-step inspection method described in Section 2. At which steps do those added items come?
  7. 7.Wyoming's manual lists situations in which a written test and a commercial learner's permit (CLP) are required. Which of these is on that list?
  8. 8.As a dual-system truck airs up, its low air light and buzzer go quiet when the gauges pass 50 psi. How does that compare with Wyoming's manual?
  9. 9.The stopping distance chart in Wyoming's Section 5 lists how far a rig travels in one second at each speed. What figure does it give for 30 mph?
  10. 10.A driver figures that careful footwork on the pedal can do everything ABS does. How does the manual compare the two when a wheel is about to lock?

0 of 25 answered