The Berlin U-Bahn is a rapid transit system in Berlin, the capital and largest city of Germany, and a major part of the city's public transport system. Together with the S-Bahn, a network of suburban train lines, and a tram network that operates mostly in the eastern parts of the city, it serves as the main means of transport in the capital.
U1 is a line on the Berlin U-Bahn, which is 8.8 kilometres (5.5 mi) long and has 13 stations. Its traditional line designation was BII. It runs east–west and its eastern terminus is Warschauer Straße S-Bahn station where it connects to the Schlesische Bahn. From there it runs through Kreuzberg via Gleisdreieck and Wittenbergplatz on to the Kurfürstendamm.
U2 is a line of the Berlin U-Bahn. The U2 line starts at Pankow S-Bahn station, runs through the eastern city centre (Alexanderplatz) to Potsdamer Platz, the western city centre and finally to the Ruhleben terminal station.
U5 is a line on the Berlin U-Bahn. It runs from Hauptbahnhof in Mitte eastwards through Alexanderplatz, Friedrichshain, Lichtenberg and Friedrichsfelde, surfaces in Biesdorf-Süd to pass Kaulsdorf and Hellersdorf above ground and finally reaches city limits at Hönow.
U8 is a line on the Berlin U-Bahn. It has 24 stations and is 18.1 km (11.2 mi) long. The U8 is one of three north–south Berlin U-Bahn lines, and runs from Wittenau to Neukölln via Gesundbrunnen. The original proposal was for a suspended monorail like the Wuppertal Schwebebahn.
The Vienna U-Bahn, where U-Bahn is an abbreviation of the German word Untergrundbahn, is a rapid transit system serving Vienna, Austria. The five-line network consists of 83.1 kilometers (51.6 mi) of route, serving 109 stations. 459.8 million passengers rode the U-Bahn in 2019.
The Munich U-Bahn is an electric rail rapid transit network in Munich, Germany. The system began operation in 1971, and is operated by the municipally owned Münchner Verkehrsgesellschaft. The network is integrated into the Münchner Verkehrs- und Tarifverbund and interconnected with the Munich S-Bahn. The U-Bahn currently comprises eight lines, serving 96 stations, and encompassing 103.1 kilometres (64.1 mi) of routes.
A ghost station is a disused train station through which revenue-service passenger trains pass but at which they do not stop. The term is also sometimes used for any unused underground station or any unused station, whether or not trains pass through them. In Germany, a station that has been built in the course of constructing something else as a so-called "Bauvorleistung" is referred to as a "ghost station", despite the different purpose and origin of the terms. Some English-language publications also refer to "pre-built" stations or parts thereof that have yet to see service as "ghost stations".
Alfred Frederik Elias Grenander was a Swedish architect, who became one of the most prominent engineers during the first building period of the Berlin U-Bahn network in the early twentieth century.
Berlin Hauptbahnhof is the main railway station in Berlin, Germany. It came into full operation two days after a ceremonial opening on 26 May 2006. It is located on the site of the historic Lehrter Bahnhof, and on the Berlin S-Bahn suburban railway. The station is owned by DB InfraGO, a subsidiary of Deutsche Bahn AG, and is classified as a Category 1 station, one of 21 in Germany and four in Berlin, the others being Berlin Gesundbrunnen, Berlin Südkreuz and Berlin Ostbahnhof.
Klosterstraße is a Berlin U-Bahn station located on the U2 in the centrally located Mitte district. The eponymous street is named after the Graues Kloster, a medieval Franciscan abbey, which later housed the Berlinisches Gymnasium zum Grauen Kloster.
Berlin-Lichtenberg is a railway station in Berlin, Germany. It is located on the Eastern Railway, Wriezen Railway and Berlin Frankfurter Allee–Berlin-Rummelsburg railway lines in the Lichtenberg district. The station is also part of the Berlin S-Bahn and U-Bahn network.
The Frankfurt U-Bahn is a Stadtbahn (premetro) system serving Frankfurt, Hesse, Germany. Together with the Rhine-Main S-Bahn and the Frankfurt Straßenbahn, it forms the backbone of the public transport system in Frankfurt. Its name derives from the German term for underground, Untergrundbahn. Since 1996, the U-Bahn has been owned and operated by Stadtwerke Verkehrsgesellschaft Frankfurt am Main (VGF), the public transport company of Frankfurt, and is part of the Rhein-Main-Verkehrsverbund (RMV) transport association. The licence contract is up to 31 December 2031 and is renewable. The contracting authority of VGF is the municipal transport company traffiQ.
The Stuttgart Stadtbahn is a semi-metro system in Stuttgart, Germany. The Stadtbahn began service on 28 September 1985. It is operated by the Stuttgarter Straßenbahnen AG (SSB), which also operates the bus systems in that city. The Stuttgart Stadtbahn is successor system of a tram network (Straßenbahnen) that characterized the urban traffic in Stuttgart for decades.
Hermannplatz is a station in the Neukölln district of Berlin which serves as an interchange between the lines U7 and U8. Operated by the BVG, it is one of the busiest stations on the Berlin U-Bahn system.
Berlin Jannowitzbrücke is a station in the Mitte district of Berlin. It is served by the S-Bahn lines S3, S5, S7, and S9 and the U-Bahn line U8. It is located next to the Jannowitz Bridge (Jannowitzbrücke) and is a public transport interchange. South of the station is Brückenstraße and north of it are Holzmarkstrasse and Alexanderstraße. The station also serves as a stop for various private excursion and sightseeing boats, among others, those of the Stern und Kreisschiffahrt and Reederei Riedel companies.
Heinrich-Heine-Straße is a Berlin U-Bahn station on the U8, located under the street of the same name in Mitte, and protected as an architectural landmark. The street and the station were called Neanderstraße until 1960.
The A line is the north-to-south main line of the Frankfurt U-Bahn. It is the oldest and longest line of the U-Bahn system. Served by four routes starting at Südbahnhof Railway Station in Sachsenhausen, the A line runs through downtown Frankfurt up to Heddernheim Station in the north of the city, where it branches out to Ginnheim, Oberursel (U3), Riedberg and Bad Homburg (U2). The U9 service between Ginnheim, Riedberg and Nieder-Eschbach does not use the central section and tunnels of the line, making it the only light rail service of the network that does not serve downtown Frankfurt. The Riedberg and Ginnheim branches were planned as parts of the future D line subway but are operationally part of the A line until the D line development and construction is finished.
The Berlin U-Bahn originated in 1880 with Werner Siemens' idea to build an urban railway in Berlin. During the nine years after the German Empire was founded, the city's population grew by over one-third and traffic problems increased. In 1896, Siemens & Halske began to construct the first stretch of overhead railway. On 1 April 1897, the company began construction of an electric underground railway. The Berliner Verkehrs Aktiengesellschaft (BVG) was formed in 1928, and took over further construction and operation of the network. In 1938, the company was renamed Berlin Transport Company; the original acronym, however, remained. Since 1994, the BVG has been a public company.
The tracks of the Berlin subway are lines operated in the line traffic, operating distances, which serve only internal purposes, turn-off and turning plants and plants in the operating farms.
: Berlin A/5555 [2] 
