[EN] In rail transport, track gauge is one of the principal factors that condition the passage of trains. For technical and economic reasons, in some circumstances it is necessary to build and operate the so-called dual ...
[EN] The dual gauge track, in which a third rail is added to the conventional track section, has recently been installed in large sections of the Spanish railway network, allowing the passage of trains of two different ...
In the National Spanish railway network, two types of track gauge with continuous welded rails are currently in use: the Iberian wide gauge (1668 mm) and the standard gauge (1435 mm). In order to improve links and ...