This inforgraphic from CDL College (a truck driving school) demonstrates the Alley Dock maneuver. You may be tested on this maneuver during the backing portion of the CDL Skiils test. We have demonstrated the different angles and provided notations to help a truck driver perfect the alley dock during the CDL driving test. Visit http://cdlcollege.com or call 303-367-1030 for more information about truck driving school or a CDL Skills Test.