The S7 connects Ahrensfelde via Lichtenberg and the Stadtbahn with the stations Friedrichstraße and Hauptbahnhof, further through the Grunewald, via Wannsee with the city of Potsdam. The line runs every 10 minutes until around 9 p.m., then every 20 minutes. Rolling stock is the class 481 The Stations at the S7
