Standard gauge in the context of "Rail in Turkey"

High-speed railways in Spain have been in operation since 1992 when the first line was opened connecting the cities of Madrid, Córdoba and Seville. Unlike the rest of the Iberian broad gauge network, the Spanish High-speed network mainly uses standard gauge. This permits direct connections to outside Spain through the link to the French network at the Perthus Tunnel. High-speed trains run on a network of high-speed rail track owned and managed by ADIF (Administrador de Infraestructuras Ferroviarias), where the dominant service is AVE while other high speed services such as Avant, Alvia, Avlo, Euromed, Ouigo España and Iryo, as well as mid-speed (InterCity) services also operate.

AVE trains are operated by Renfe, the national passenger high-speed rail operator in Spain, but other companies such as Ouigo España and Iryo compete on the Madrid–Barcelona and other routes in accordance with the European Union legislation. French TGV services run from the border to Barcelona under the TGV inOui brand. Alvia and Euromed trains are also operated by Renfe and have the ability to use both Iberian gauge and standard gauge lines offering high-speed services across the whole Spanish network.

The Ethio-Djibouti Railway (French: Chemin de Fer Djibouto-Éthiopien, C.D.E.; Amharic: የኢትዮ-ጅቡቲ ባቡር መስመር) is a metre gauge railway in the Horn of Africa that once connected Addis Ababa to the port city of Djibouti. The operating company was also known as the Ethio-Djibouti Railways. The railway was built in 1897–1917 to connect the Ethiopian capital city to French Somaliland. During early operations, it provided landlocked Ethiopia with its only access to the sea. After World War II, the railway progressively fell into a state of disrepair due to competition from road transport.

The railway has been mostly superseded by the Addis Ababa–Djibouti Railway, an electrified standard gauge railway that was completed in 2017. The metre gauge railway has been abandoned in central Ethiopia and Djibouti. However, a rehabilitated section is still in operation near the Ethiopia-Djibouti border. As of February 2018, a combined passenger and freight service runs two times a week between the Ethiopian city of Dire Dawa and the Djibouti border, stopping at Dewele (passengers) and Guelile (freight). Plans were announced in 2018 to rehabilitate track from Dire Dawa to Mieso.

The Gala-Yuzawa Line (ガーラ湯沢線, Gāra-yuzawa-sen) is the unofficial name for a railway branch line in Yuzawa, Niigata, Japan, operated by East Japan Railway Company (JR East).

The standard gauge line is a short (1.8 km (1.1 mi)) branch line that extends from Echigo-Yuzawa Station on the Jōetsu Shinkansen to Gala-Yuzawa Station, but is officially classified as a branch of the (narrow gauge) Jōetsu Line. The line has no intermediate stations.

The Gauge Change Train (GCT) or Free Gauge Train (フリーゲージトレイン; "FGT") is the name given to a Japanese project started in 1994 to develop a high-speed train with variable gauge axles to allow inter-running between the 1,435 mm (4 ft 8+1⁄2 in) standard gauge Shinkansen network, and the 1,067 mm (3 ft 6 in) narrow gauge regional rail network.

Two three-car and one four-car "GCT" electric multiple unit (EMU) trains have been built for testing. The first train operated from 1998 until 2006, the second train operated from 2006 until 2014 and the third-generation train commenced testing in 2014, although testing is currently suspended due to technical issues with the bogies. The GCT was due to be introduced on the Nagasaki Shinkansen upon its opening in 2022, but JR Kyushu announced in June 2017 that it had abandoned plans to adopt the GCT for these services.

Mini-shinkansen (ミニ新幹線) is the name given to the concept of converting 1,067 mm (3 ft 6 in) narrow gauge railway lines to 1,435 mm (4 ft 8+1⁄2 in) standard gauge for use by shinkansen train services in Japan. Unlike the high-speed Shinkansen lines, the mini-Shinkansen lines have a maximum speed of 130 km/h (80 mph). Two mini-Shinkansen routes have been constructed: the Yamagata Shinkansen and Akita Shinkansen.

The first 1,435 mm (4 ft 8+1⁄2 in) standard gauge railway to be built and survive in China was the Kaiping (開平) colliery tramway located at Tangshan in Hebei province. However, this was not the very first railway in China. An earlier attempt to introduce railways had been made in 1876 when the short Shanghai to Wusong narrow gauge line known as the "Woosung Road Company" was built but then pulled up within less than two years because of Chinese government opposition.

The Szczecin tram system is a 12-line, standard gauge tramway system in Szczecin, Poland, that has been in operation since 1879 (when the town was Stettin, Prussia). The tramway operates on 65 kilometers (40 mi) of route. There are two depots and twelve balloon loops (including five street ones). Daytime lines (night lines were abolished in 1996) are operated by the company Tramwaje Szczecińskie (Szczecin Tramways), on behalf of the ZDiTM (Zarząd Dróg i Transportu Miejskiego [pl]; Road and Public Transport Administration). There is also a tourist line operated by the Szczecin's Association of the Enthusiasts of Public Transport.

Alvia is a high-speed train service in Spain offered by Renfe Operadora on long-distance routes with a top speed of 250 km/h (160 mph). The trains have the ability to use both Iberian gauge and standard gauge, which allows them to travel on the recently constructed high-speed lines for part of the journey before switching to the "classic" Iberian gauge network to complete it. Trains that run exclusively on high-speed tracks are branded AVE or Avant.

Swiss Federal Railways (German: Schweizerische Bundesbahnen, SBB; French: Chemins de fer fédéraux suisses, CFF; Italian: Ferrovie federali svizzere, FFS) is the national railway company of Switzerland.

The company was founded in 1902 and is headquartered in Bern. It used to be a government institution, but since 1999 it has been a special stock corporation whose shares are held by the Swiss Confederation and the Swiss cantons. It is the largest rail and transport company of Switzerland; it operates on most standard gauge lines of the Swiss railway network. It also heavily collaborates with most other transport companies of the country, such as the BLS, one of its main competitors, or Südostbahn (SOB), to provide fully integrated timetables with cyclic schedules.