Home › CDL Practice Tests › Combination Vehicles Questions › Question 46

Uncoupling Steps & Safety

What can happen if you pull completely clear without the uncoupling pause?

  • A.Nothing, the pause is optional
  • B.Only the paint can be scratched
  • C.A trailer whose gear collapses or that is still connected can fall or be dragged with no chance to catch it
  • D.The tractor will use more fuel
Correct answer

C. A trailer whose gear collapses or that is still connected can fall or be dragged with no chance to catch it

Why

The staged pull-away exists because dropped trailers usually fail in the first moments after the fifth wheel leaves. Skipping the pause removes the only support that could save the trailer.

Manual topic: Combination Vehicles - Uncoupling · From the Combination Vehicles practice bank (CV-046).

Practice this subject as a full test

More Uncoupling Steps & Safety questions