Practice question

A sliding fifth wheel allows you to:

  1. Adjust how high the trailer sits
  2. Move weight forward or back between the drive axles and trailer tandems
  3. Couple to two trailers at once
  4. Disengage the kingpin without releasing the lock

Answer: B — Move weight forward or back between the drive axles and trailer tandems

The correct answer is shown above. Try the full quiz for additional practice.

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