Railcar mover

A railcar mover (also called a shunt vehicle in Australia, the UK, and in Canada, or the trademarks Trackmobile or ShuttleWagon) is a road–rail vehicle (capable of travelling on both roads and rail tracks) fitted with couplers for moving small numbers of railroad cars around in a rail siding or small yard.

[1] Vollert has developed an unmanned road-rail remote controlled vehicle VLEX for shunting up to 300 t.[2]

Unimog 405/UGN road–rail vehicle used as a rail car mover
A Volvo L70F loader fitted with Aries Hyrail road–rail vehicle conversion and train braking system