Abstract: A double axle drive includes at least one driving motor arranged between two drive axles, wherein the axis of rotation thereof extends transversely, in particular perpendicularly to the drive axles, where a wheel set shaft is drivable via a drive shaft of the driving motor via each transmission, and where the entire double axel drive is arranged in a housing unit that includes two housing parts.

Abstract: A multiple wheeled vehicle in which at least some of the wheels are upwardly retractable by rotation of arms carrying the wheels. Hydraulic cylinders control the rotational position of the arms, and movable rods are connected to the hydraulic cylinder means. Coil springs urge the rods toward a position where the hydraulic cylinders and arm means position the wheel in a relatively downward rotational position, so that the retractable wheels may be alternatingly retracted upwardly and lowered downwardly by the hydraulic cylinder means, while also possessing a spring suspension system. Additionally or alternatively, non-retractable rail wheels may be present, being driven by internal, planetary-type, differential axle means defining internal brake means spaced centrally inwardly from the rail wheels by a distance sufficient to avoid damage to the brakes upon derailment.