Abstract: A wheel chock positioning arrangement comprises a support arm arrangement including a lateral support; a mounting plate connected to the lateral support; a first cantilever arm assembly and a second cantilever arm assembly each having opposite first ends and second ends, the first ends are pivotally mounted to the mounting plate for angular displacement of the first assembly and the second assembly in a transversal direction between a storage position and an extended position; and the second ends are pivotally connected to a wheel chock mount configured to receive a wheel chock; a track extending longitudinally; and a carriage for mounting the support arm arrangement and configured to move along the track. The arrangement can position and retrieve the wheel chock. Wear, tear and mechanical stress on system components are reduced, vehicle immobilization safety is improved and a misalignment of the chock when engaging a base plate can be tolerated.

Abstract: The wheel chock (100) is designed to prevent a vehicle (104) from moving in an unauthorized or accidental manner. The wheel chock (100) includes a longitudinal extension (200) to further improve resistance to rollover and tipping when the wheel (102) is pressed forcefully against the wheel chock (100). The extension (200) includes a protruding portion (210) that can extend over a relatively long distance along the tire sidewall (126) and allows the wheel chock (100) to create a latching engagement between a tooth (160) and a blocking element (112) on the base plate (110) beyond the front end of its main body (150).