S11 (Rhine-Ruhr S-Bahn)

Source: German railway atlas

Line S 11 is a S-Bahn line operated by DB Regio on the Rhine-Ruhr S-Bahn network. It connects Düsseldorf Airport Terminal with Bergisch Gladbach, running via Düsseldorf Neuss, Dormagen and Cologne. Before 13 December 2009, the service operated from Wuppertal-Vohwinkel in peak time, sharing the Wuppertal-Düsseldorf run with the S8 trains. Normal operation, though, started at Düsseldorf-Wehrhahn. Since the introduction of the new 2010 Schedule the service starts at Düsseldorf Airport Terminal replacing the line S 7 to Düsseldorf Hbf. The former run to Wuppertal-Vohwinkel is now conducted by the S 68.

The S11 runs are normally operated with DBAG Class 423 stock.

Line S 6 runs over lines built by various railway companies:

Services commenced between Cologne and Köln-Chorweiler on 1 June 1975 and extended to Köln-Chorweiler Nord on 22 May 1977. Services were extended to Neuss on 2 June 1985, to Düsseldorf-Gerresheim/Düsseldorf Wehrhahn on 29 May 1988, to Wuppertal-Vohwinkel. On 13 December 2009, it was extended to Düsseldorf Airport Terminal, dropping the fork to Wuppertal-Vohwinkel.

...
Wikipedia