DBAG Class 423 of the Munich S-Bahn in Gesundbrunnen station
S21 (2006, 2009)
Hennigsdorf only in 2009
Gesundbrunnen
Berlin Hauptbahnhof
Potsdamer Platz
Südkreuz

S21 a former route for the Berlin S-Bahn. The two former services were operated with 15 kV, 16.7 Hz AC overhead lines, while all other S-Bahn lines in Berlin were and are operated with 800 V DC third rail. It was operated by Deutsche Bahn.

First operation in 2006 edit

S21 service was introduced with the opening of the Berlin North-South mainline and the new Berlin Hauptbahnhof central station, while the 2006 FIFA World Cup took place in Germany. DBAG Class 423 trains were used, these trains were borrowed from the Munich, Stuttgart and Frankfurt S-Bahn networks. The first S21 service was discontinued on July 11, 2006.

Second operation in 2009 edit

In 2009 the S-Bahn service had to be strongly shortened due to lack of rolling stock. As a replacement and addition for the North-South S-Bahn route (S1, S2, S25 service), the S21 ran again. Some S21 trains were extended to Hennigsdorf as a replacement for S25. This time, trains of the Munich, Stuttgart and Rhine-Ruhr S-Bahn networks were used.

References edit