Question

If you don't pull the dolly out from beneath the rear trailer before unlocking the pintle hook:

Answers

The tow bar may cause injury.

The landing gear may break.

The pintle hook may detach.

Nothing bad could happen.

Explanation

Never unlock the pintle hook with the dolly still under the rear trailer. This could cause the dolly tow bar to fly up, possibly causing serious injury.

This questions appears in the following tests: