Subway / The Berlin underground

http://www.bvg.de/en/Travel-information?#tab-list-0-u

The largest underground system in Germany

The Berlin underground (U-Bahn) is one of the most modern systems in all of Europe and the most extensive public transport network of its type in Germany.
The Berlin underground system is well-known for its high levels of performance and its emphasis on environmental responsibility.
Its nine lines extend a total of 151.7 kilometres, and serve 170 stations.
The Berlin underground system is used by more than one million people every day. Every year, its trains carry 400 …

With its ten lines, the U-Bahn (underground, subway) Berlin runs along a network of approximately 146 kilometres and includes 143 stations. Most metro lines operate underground, but some run on above ground tracks. The U-Bahn Berlin is known for its yellow-colored trains. Train stations can be identified by the blue and white U symbol.


The Berlin underground at BVG

Berlin U-Bahn – at Wikipedia.

The Berlin U-Bahn (from "Untergrundbahn", meaning "underground railway") is a rapid transit railway in Berlin, the capital city of Germany, and is a major part of the public transport system of the city. Opened in 1902, the U-Bahn serves 170 stations spread across ten lines, with a total track length of 151.7 kilometres (94.3 mi), about 80% of which is underground. Trains run every two to five minutes during peak hours, every five minutes for the rest of the day and every ten minutes in the evening. Over the course of a year, U-Bahn trains travel 132 million km (82.0 million mi), and carry over 400 million passengers. In 2012, 507.3 million passengers rode the U-Bahn. The entire system is maintained and operated by the Berliner Verkehrsbetriebe, commonly known as the BVG.