Question

Pushing in the trailer air supply control will:

Answers

Supply the trailer with air.

Deactivate the air brakes.

Prevent the vehicle from skidding.

Explanation

Push in the trailer air supply control to supply the trailer with air. Pull out the trailer air supply control to turn off the air supply and activate the emergency brakes.

This questions appears in the following tests:

Alaska Combination

Arkansas Combination

Connecticut Combination

Hawaii Tank

Hawaii Combination

Iowa Tank

Louisiana Combination

Mississippi Combination

Nebraska Combination

North Carolina Combination

Washington Combination

Wyoming Combination