Track gauge in Europe

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 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.)
 * Irish gauge
 * Republic of Ireland and Northern Ireland
 * Iberian gauge
 * Portugal and Spain

High-speed rail
Apart from Russia and Finland, all high-speed rail in Europe uses standard-gauge tracks.