Overview
Locale	Berlin
Service
System	Berlin S-Bahn
Operator(s)	S-Bahn Berlin GmbH
Rolling stock	DBAG Class 481
Technical
Electrification	750 V DCThird rail
Route map Legend Ahrensfelde Mehrower Allee Raoul-Wallenberg-Straße Marzahn Poelchaustraße toWartenberg Springpfuhl toStrausberg Nord Friedrichsfelde Ost Lichtenberg Nöldnerplatz toErkner Ostkreuz toBER Airport Warschauer Straße Ostbahnhof Jannowitzbrücke Alexanderplatz Hackescher Markt Spree Kupfergraben Friedrichstraße Spree Berlin-Spandau Ship Canal Hauptbahnhof Spree Bellevue Tiergarten Landwehr Canal Zoologischer Garten Savignyplatz Charlottenburg Westkreuz toSpandau Grunewald Nikolassee Wannsee Brandenburg–Berlin state border Griebnitzsee Babelsberg Potsdam Hbf This diagram: view talk edit

S7 is a line on theBerlin S-Bahn.^[1] It operates fromAhrensfelde toPotsdam over:

• theWriezen Railway, completed on 1 May 1898 and electrified toMarzahn in 1976, toMehrower Allee in 1980 and to Ahrensfelde in 1982,
• a section of theOuter ring, completed in the early 1940s as part of theOuter freight ring and electrified in 1976,
• a section of thePrussian Eastern line, opened on 1 October 1866 and electrified on 6 November 1928,
• theStadtbahn, opened on 7 February 1882 and electrified on 11 June 1928,
• a section of theBerlin-Blankenheim line, opened west ofGrunewald in 1879 and further east in 1882 and electrified in 1928 and
• a section of theBerlin-Potsdam-Magdeburg line, opened in 1838 and electrified in 1928.

The S7 was created on 2 June 1991, replacing the Red route of the East Berlin S-Bahn betweenAlexanderplatz andAhrensfelde, with the western terminus extended toFriedrichstraße.^[2][3]

• 
  S7 leaving Berlin Hauptbahnhof en route for Ahrensfelde

• Berlin S-Bahn lines
• Transport in Potsdam

• CS1 German-language sources (de)
• Use dmy dates from January 2020
• Pages with no gauge entered in Infobox rail line
• Articles containing German-language text