Question

If a parked trailer does not have spring brakes, you should keep the trailer from moving by:

Answers

Using the air brakes.

Using wheel chocks.

Parking near a wall.

Parking on a slight incline.

Explanation

If a parked trailer does not have spring brakes, wheel chocks should be used to prevent it from moving. Air brakes can only hold a parked trailer for as long as there is air pressure remaining in the air tanks, so wheel chocks will ensure safety.

This questions appears in the following tests:

District Of Columbia Combination

Illinois Double

Mississippi Combination