A rail car mover is a vehicle capable of travelling on both roads and rail tracks, and fitted with couplers for moving small numbers of railroad cars around in a rail siding or small yard. Unimog (ˈjuːnɨmɒɡ designates a range of multi purpose Four wheel drive medium trucks produced by Mercedes-Benz, a division of Daimler AG. A coupling (or a coupler) is a mechanism for connecting Rolling stock in a train A railroad car or railway carriage is a Vehicle on a rail transport system (railroad or railway that is used for the carrying of Cargo or A siding, in Rail terminology, is a track section distinct from a through route such as a main line or Branch line or spur A ( US and Canada) classification yard or ( UK and Canada) marshalling yard (including hump yards) is a Railroad They are extensively used by railroad customers because they are cheaper than owning a switcher locomotive, more convenient and cheaper than paying the railroad operator to do the switching, easier and more productive than manual moving of cars, and in addition they are more versatile since they can travel on road wheels to the cars they need to move, instead of needing clear track. A switcher or shunter ( Great Britain: shunter; Australia: shunter or yard pilot; USA: switcher (or A locomotive is a railway Vehicle that provides the motive power for a Train.
Some have two drive systems and drive only on steel wheels on the rail, with their rubber tires lifted out of the way, while others have only one drive system and use steel rail wheels only to guide them and use their rubber tires on the rail, in a similar fashion to HiRail trucks. A Road-rail vehicle is a Self-propelled Vehicle that can be legally used on both Roads and rails.
Rail car movers are fairly lightweight, so in order to gain more traction some models transfer weight from the car they are hauling onto their own wheels. Other models that employ the rubber tire drive while on the rail do not require this "weight-transfer" from the railcar.
In Europe, trucks fitted with railway wheels and coupling rods are used as rail car movers (often called towing or shunting vehicles).
Numerous manufacturers produce rail car movers. Perhaps the best known, and one of the earliest, is Trackmobile, whose name is sometimes used inaccurately as a generic term for these vehicles. Other well-known rail car mover brands in North American include Rail King and Shuttlewagon. German brands are Unimog and Zweiweg. Germany, officially the Federal Republic of Germany ( ˈbʊndəsʁepuˌbliːk ˈdɔʏtʃlant is a Country in Central Europe. Unimog (ˈjuːnɨmɒɡ designates a range of multi purpose Four wheel drive medium trucks produced by Mercedes-Benz, a division of Daimler AG. In Italy Zephir produces rail-road shunters since 1977, both diesel and electric (battery powered).
There are two basic technologies, one is weight transfer and two rubber rail, both have advantages and disadvantages.