Practice question

What happens when you pull the fifth wheel release lever?

The trailer immediately detaches
The fifth wheel jaws open, releasing the kingpin, but the trailer may not separate until the tractor moves
The landing gear automatically lowers
The trailer brakes release

Answer: B — The fifth wheel jaws open, releasing the kingpin, but the trailer may not separate until the tractor moves

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