Roadrailer

The "Roadrailer" is a trailer or semi-trailer that can be hauled on roads by a tractor unit and then by way of a fifth wheel coupling, operate in a unit train on Railways. The RoadRailer system allows trailers to be pulled by locomotives without the use of flatcars, instead attaching trailers directly to bogies.

Overview

Side view of a Roadrailer's regular truck showing the connection between two trailer bodies.]]

[[File:|thumb|300px|]] The advantage of using roadrailers is their ability to be used directly behind other freight (or even passenger) equipment without the use of trailer flatcars.