Abstract: A towing vehicle hitch assembly is pivotally mounted on a back plate and support element welded to a hitch bracket attached to the towing vehicle. The hitch assembly has a release arm maintaining a bottom plate with side guide plates integral thereto in an inclined position over a ball mounted on a post to the support element. There are a pair of pivoting release plates centered in the bottom plate. A corresponding hitch roller assembly is mounted to the tongue of a trailer with a ball socket at its distal end. The roller assembly has either ball bearings or rollers attached to its forward end. As the towing vehicle moves toward the trailer, the trailer's hitch assembly trips the release arm and stops at the forward edge of the towing vehicle hitch assembly. This places the socket above the ball and as it engages it falls by gravity over the ball.