During the coupling procedure, what height should the trailer be?
a.Higher than the center of the fifth wheel so it is raised when coupled
b.At the same height as the fifth wheel
c.Slightly lower than the center of the fifth wheel so the trailer is raised slightly by the tractor
d.As low as possible to the ground
Explanation
The trailer should be at the correct height so that it is raised slightly by the tractor when the tractor backs under it. If the trailer is too low, the tractor may strike and damage the nose of the trailer. If too high, the trailer may not couple correctly.