Editing Transporter wagon (section)

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[[Image:001015 gauge buster.jpg|thumb|A [[DSB (railway company)|DSB]] [[standard gauge]] freight car on a narrower gauge transporter wagon]]
[[File:Schema rollbocks trucks.PNG|thumb|300px|[[Rollbock]]s vs transporter wagons]] 
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A '''transporter wagon''', in [[railway]] terminology, is a [[goods wagon|wagon]] ([[International Union of Railways|UIC]]) or [[railroad car]] (US) designed to carry other railway equipment.  Normally, it is used to transport equipment of a different [[rail gauge]].  In most cases, a transporter wagon is a narrower gauge wagon for transporting a wider gauge equipment, allowing freight in a wider gauge wagons to reach destinations on the narrower gauge network without the expense and time of [[transshipment]] into a narrower gauge wagons.

This is an attempt to overcome one of the primary problems with differing gauge systems&mdash;gauge incompatibility. However, it means that the narrower gauge network must be built to a [[structure gauge]] large enough to accommodate the [[loading gauge]] of the wider gauge equipment, negating one of the cost advantages of a narrower gauge construction. Additionally, a large wider gauge wagon balanced on a narrower gauge transporter wagon is not very stable, and is generally restricted to low speeds of {{convert|15|mph|km/h|1|abbr=on}} or so.

Transporter wagons have seen varying popularity. They were quite common in Germany (where they are called ''{{lang|de|Rollwagen}}''), Austria, Switzerland (here called ''{{lang|de|Rollschemel}}'' in German and ''{{lang|fr|trucs transporteurs}}'' in French) and Sweden.

Transporter wagons were uncommon in [[North America]], where the practice of [[Bogie exchange|exchanging trucks]] was more common, as was at one time the case on [[Canadian National Railway|CN]]'s [[Newfoundland Railway]] at [[Channel-Port aux Basques, Newfoundland and Labrador|Port aux Basques]]. They were used on the [[Paw Paw Railroad]] of [[Paw Paw, Michigan]] for a short time, and on a short stretch of track of the defunct [[Bradford, Bordell and Kinzua Railroad]] by lumberman Elisha Kent Kane.
They were used in the [[United Kingdom]] on the [[Leek and Manifold Valley Light Railway]].