Abstract: A cargo handling and restraining system for loading, unloading, and transporting cargo containers in a carrier vehicle. The carrier is provided with a supporting floor (bed) having a plurality of tracks disposed thereon. The tracks include a channel disposed between a pair of spaced, horizontally extending members, and each container is provided with members which "ride" in the channel of the tracks to move the containers along the track. A hook assembly is provided at opposite ends and on the bottom of the containers for engaged relation with a retaining mechanism which positively locks adjacent containers together and to the track. A locking member is provided for rigidly securing the last loaded container (toward the rear of the bed) to the track. A cargo loader mechanism is provided to load and unload the cargo onto and off of the bed, and a cargo cart is provided to transport the cargo from or to a storage bin.