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Practice test 2 of 10

Delaware CDL — Air Brakes Practice Test 2

The Delaware 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.Your ABS stops working partway through a trip. You still have your regular brakes and keep driving normally. What else does the manual tell you to do?
  2. 2.You pass the air brakes knowledge test, then take your Delaware skills exam in a truck that has no air brakes. What goes on your CDL?
  3. 3.A coworker claims that ABS always makes a truck stop in a shorter distance. What does the manual say?
  4. 4.Why does the manual warn against walking away from your vehicle without setting the parking brakes or putting chocks under the wheels?
  5. 5.In stab braking, you let off the brakes when the wheels lock. How long can it take before the wheels are rolling again?
  6. 6.Why does the manual say the low-speed service brake test is worth doing before you head out?
  7. 7.For the air leakage rate test on Delaware's inspection test, you shut off the engine. What do you do with the key next?
  8. 8.You are about to troubleshoot a brake adjustment problem on a vehicle with automatic slack adjusters. What does the manual say to consult first?
  9. 9.You want to know whether your truck was built late enough that ABS was required. Where does the manual tell you to find its date of manufacture?
  10. 10.While you are driving, what keeps the powerful springs in the spring brakes from putting the brakes on?

0 of 25 answered