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  • Road–rail vehicle


    Unimog 405/UGN road-rail vehicle used as a rail car mover A Ford Ranger on the Puffing Billy Railway, a self-propelled vehicle that can be legally used on both roads and rails The Cahaba Material Handler- This vehicle is mainly used for hauling cross-ties and scrap metal for on rail application. It is equipped with an electromagnet that assists in scrap and debris cleanup. A road–rail vehicle is a vehicle which can operate both on rail tracks and a conventional road. They are also called hi-rail, from highway and railway, or variations such as high-rail, HiRail, Hy-rail, etc. They are often converted road vehicles, keeping their normal wheels with rubber tires, but fitted with additional flanged steel wheels for running on rails. Propulsion is typically through the conventional tires, the flanged wheels being free-rolling; the rail wheels are raised and lowered as needed. Purpose-built road–rail vehicles also exist.

  • High rail


    High rail (also called "hi-rail" and "hirail") is a phrase used in model railroading in North America, mostly in O scale and S scale, to describe a "compromise" form of modelling that strives for realism while accepting the compromises in scale associated with toy train equipment. The phrase exists due to the observation that traditional Lionel and American Flyer toy train track sits much higher than finescale track. The compromises that were traditionally made in manufacturing these trains have led to three approaches to model railroading in these two scales. The traditional toy train layout makes little, if any, effort at realism and often makes use of unpainted plastic buildings, particularly the Plasticville brand, and other toys, making little or no effort to disguise their origin. In some cases, the buildings, vehicles, and figures on the layout may not even be the same scale as the train, or each other. Roads, grass, and roadbed may be painted onto the table surface, or may be represented with low-pile carpet. Scale modeling also occurs in O and S scales, just like in HO or N scales, where the modeler tries to create a miniature world that is as realistic as possible.

  • Jeep train


    Jeep at the Australian War MemorialJeep train usually refers to a railway train hauled by jeeps with flanged rail wheels. World War II jeeps were converted from road vehicles into steel-wheeled rail switchers (shunters), light locomotives, or speeders (draisines). (The phrase was also used for supply trains consisting of jeeps and for columns of jeeps linked together and pulled through bad ground by tractors. Not all primary sources will use this phrase in the same way.)

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