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.