Abstract: A road vehicle for hauling cargo has a substantially rectangular flatbed member with front and rear upright walls. The front wall is attached to the flatbed by a semi-rigid joint and the rear wall is attached to the flatbed by a free swinging hinged joint. One or more longitudinal members extend between the top of the front and rear walls. Posts spaced longitudinally of the cargo vehicle extend from the elevated longitudinal member or members to the flatbed member. One or more of the posts are collapsible or swingable to be selectively movable to a position for unobstructed access for side loading and unloading of the vehicle.

Abstract: A door holdback device holds a door or panel in open position. It may be mounted upon the wall of a conventional boxlike highway trailer and is automatically retractable to an inoperative position. The holdback device has a primary wire loop extending from the wall, said primary loop being integrally attached to two secondary wire loops, which are then secured to the interior of the wall. The secondary wire loops are internally stressed to retract the primary loop when not in use. A second embodiment employs an internally stressed primary loop which moves about its supporting mount to assume an operative position.