Abstract: The butt of an aluminum 270.degree. hinge is inserted and welded into a slot in an elongated aluminum rib forming the rear corner extremities of the cargo container of a highway semi-trailer. A tapered plug extending from the base of the butt is welded into an elongated slot in the rib from the side of the rib remote from the hinge. The hinge pin is disposed closely adjacent to the outer end of the rib. A concave indentation in the base of the butt receives a convex portion of the hinge strap.

Abstract: Pneumatic and electrical components of an anti-skid braking system are assembled upon and within an elongated housing frame, which is mounted in a free space under the vehicle chassis. The air tanks are strapped to the top of the frame in a triangular array in indentations in ridged ends. The pneumatic control elements are disposed in a staggered array within the housing. An indented cover panel, which receives the electrical computer components is secured to the bottom of the housing. The cover panel is permanently or removably attached to the bottom of the housing.