Most railways in Europe use the standard gauge of . Some countries use broad gauge, of which there are three types. Narrow gauges are also in use.
Broad gauge Russian and 5 ft gauge : former Soviet Union states : Finland and Estonia (The difference is within tolerance limits, so it is possible to exchange trains between 1520 mm and 1524 mm networks without changes to the wheelsets, however sometimes issues like stuck rolling stock might occur.) Irish gauge : Republic of Ireland and Northern Ireland Iberian gauge : Portugal and Spain
Narrow gauge
High-speed rail Apart from Russia and Finland, all high-speed rail in Europe uses standard-gauge () tracks.
See also
Rail gauge in North America Rail gauge in South America Rail gauge in Australia
References