Apparatus and methods for loading, transporting and dumping a plurality of containers on a vehicle are provided. The apparatus includes a frame pivotally attachable a vehicle bed, an upper container engaging means and a lower container engaging means, both coupled to the frame. The upper container engaging means is moveable between a first height and a second height, the first height and the second height differing by greater than at least the height of a container. The lower container engaging means may be stowed and deployed. The upper container engaging means is moveable to the first height for loading a first container when the lower container engaging means is stowed. The lower container engaging means is deployed at the first height for loading the second container when the upper container engaging means is at the second height. The first container and second container may thereby be sequentially loaded and simultaneously transported on the vehicle.