When coupling, if the trailer is too low, the tractor may:

Hit the nose of the trailer and damage it.. Section 6.4: If too low, the tractor frame or fifth wheel may hit the nose of the trailer.

When coupling, if the trailer is too low, the tractor may:

ANSWER BREAKDOWN
  • A. Incorrect. "Slide under the trailer easily." is not correct. If too low, the tractor frame or fifth wheel may hit the nose of the trailer.
  • B. Correct. If too low, the tractor frame or fifth wheel may hit the nose of the trailer.
  • C. Incorrect. "Couple automatically." is not correct. If too low, the tractor frame or fifth wheel may hit the nose of the trailer.
  • D. Incorrect. "Lift the trailer." is not correct. If too low, the tractor frame or fifth wheel may hit the nose of the trailer.