Hi rail in model railroading
Hi rail in model railroading refers to the use of traditional Lionel or American Flyer trains in a scale-like setting with realistic scenery. Hi-rail is a railroading term, but in real railroading it refers to a vehicle that can operate either on tracks or a regular road.
Sometimes hi rail is spelled high rail, with or without a dash, and sometimes combined into a single word, highrail or, more frequently, hirail.