Question

When coupling, after you've connected the air lines to the trailer, you should:

Answers

Supply air to the trailer.

Activate the emergency brake.

Disconnect the glad hands.

Explanation

Correctly following the steps to couple and uncouple trailers is vital to safely operating a combination vehicle. After connecting the air lines to the trailer while coupling, you should supply air to the trailer.

This questions appears in the following tests:

New Hampshire Combination

Oklahoma Combination

Rhode Island Combination

Vermont Combination

Washington Combination