Abstract: A railway loading dock is provided with adjacent trackage having pairs of main rails and stabilizing rails. A modified railway flatbed car is equipped along its sides with stabilizing wheels and associated support structure to retain the car bed coplanar with the loading dock surface to permit drive on loading and drive off unloading of large trucks. The railway car bed is equipped with bed extensions which primarily occupy that space between ends of adjacent cars to permit travel of trucks, in a straight or oblique manner, over the ends of adjacent railway cars. The stabilizing rails have inclined segments for gradual engagement with the car stabilizing wheels.