S9 (Berlin)
S9 is a line on the Berlin S-Bahn. It operates from Flughafen BER to Spandau through Berlin Hauptbahnhof over:
- a very short section of the Outer ring, opened in 1951 and electrified in 1983,
- a short section of the former Outer freight ring opened in the early 1940s and electrified in 1983,
- the Görlitz line, opened in 1866 and electrified in 1929,
- the Ring line, completed in 1877 and electrified in 1926 and, via a connecting curve,
- the Berlin–Wrocław railway, which at Berlin Ostbahnhof becomes
- the Berlin Stadtbahn to Charlottenburg,
- the Spandau Suburban Line.