Abstract: The device for restraining a truck or transport trailer at a loading dock comprises a frame having a vertical securing face and a lower horizontal securing face for mounting of the device to a structure such as a loading dock and at least partially supported by a driveway in front of the loading dock. A pivotal bar member having one end pivotally secured to the frame above and intermediate the length of the lower horizontal bearing face and outwardly of the vertical securing face is movable from a generally horizontal vehicle release position to a vehicle restraining position with the bar generally perpendicular to the lower horizontal bearing face. The bar is moved by a hydraulic cylinder pivotally secured adjacent the forward end of the lower horizontal securing face and pivotally secured to said bar member to be angled rearwardly towards said vertical securing face. The cylinder is pivotally secured to arms extending below the bar beyond the pivot securement of the bar to the frame.