Practice Quiz

Commercial Drivers License Exam Prep - Question List

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26. During the pre-trip inspection, which of the following should be checked?
  1. Brake drums or discs
  2. Air hoses going to brake chambers
  3. S-cam brake slack adjusters
  4. All of the above
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27. The low air pressure warning must come on if the pressure reaches?
  1. 60 psi
  2. 55 psi
  3. 155 psi
  4. 75 psi
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28. In terms of the ABS (Anti-Lock Braking System), which of the following are true?
  1. ABS does not decrease normal braking capability.
  2. ABS does not increase normal braking capability.
  3. ABS only activates when the wheels are about to lock up.
  4. All of the above are true.
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29. When using a helper or ground guide for backing, you and the helper should:
  1. Spend time getting know one another.
  2. Agree to have the helper stand in front of the vehicle.
  3. Work out a system of hand signals, especially for "stop."
  4. Ignore one another.
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30. A Class C CDL is required for those who will be driving:
  1. Any vehicle that is designed to transport 16 or more people, including the driver
  2. A school bus that is designed to carry 11 passengers or more, including the driver
  3. A and B above
  4. None of the above
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