Practice question

For the Kentucky CDL Combination Vehicles test, which statement is correct about air brakes as a CDL trigger?

  1. Back under the trailer at an angle to save space.
  2. Leave landing gear partly raised so it can clear the trailer nose.
  3. Close every shut-off valve before moving the combination.
  4. Air brakes alone do not determine whether a CDL is required.

Answer: D — Air brakes alone do not determine whether a CDL is required.

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