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Practice test 8 of 10

Delaware CDL — Air Brakes Practice Test 8

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.Which of these is NOT one of the four parts of the air brake check on Delaware's CDL vehicle inspection test?
  2. 2.For the L restriction on a CDL, what does the manual count as 'air brakes'?
  3. 3.Why does the manual warn against walking away from your vehicle without setting the parking brakes or putting chocks under the wheels?
  4. 4.Pressure in your air tanks has dropped to about 100 psi, and the governor lets the compressor go back to pumping. What does the manual call this pressure level?
  5. 5.Using the manual's downgrade braking technique, when do you apply the brakes again after releasing them?
  6. 6.Why does the manual say the low-speed service brake test is worth doing before you head out?
  7. 7.In an air-operated disc brake, what turns the power screw?
  8. 8.A pickup cuts across your lane with little warning, and your instinct is to hit the brakes. When does the manual call that a good response?
  9. 9.A converter dolly was built after March 1, 1998. What does the manual say it is required to have?
  10. 10.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?

0 of 25 answered