roadrailer
Sign in to saveRoadRailers were a trailer or semi-trailer that could be hauled on roads by a tractor unit and then by way of a fifth wheel coupling, operate in a unit train on railway lines. The RoadRailer system allowed trailers to be pulled by locomotives without the use of flatcars, instead attaching trailers directly to bogies.
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RoadRailers were a trailer or semi-trailer that could be hauled on roads by a tractor unit and then by way of a fifth wheel coupling, operate in a unit train on railway lines. The RoadRailer system allowed trailers to be pulled by locomotives without the use of flatcars, instead attaching trailers directly to bogies.
==Overview== thumb|300px|right|Side view of a Roadrailer's dedicated Bogie|regular truck showing the connection between two trailer bodies. This image shows only one fifth wheel. thumb|300px|Northbound Roadrailer at Fields, Oregon|Fields, July 1998 The advantage of using roadrailers was their ability to be used directly behind other freight (or even passenger) equipment without the use of trailer flatcars.