S19 (Rhine-Ruhr S-Bahn)

Source: German railway atlas

Line S19 is a S-Bahn line of the Rhine-Ruhr network in Germany. It is operated by DB Regio with class 423 electric multiple units.

The S19 runs until the early evening from Düren via Cologne to Blankenberg (Sieg), Herchen or Au (Sieg) on working days and between Düren and Hennef (Sieg) on Saturdays, Sundays and public holidays. Services to/from Herchen or Au do not stop in Blankenberg. It shares most of this route with line S12, but it runs through Cologne/Bonn Airport instead of through Porz. The S12 also no longer runs west of Horrem. The S19 also shares most of its route with the S13 service, which, however, does not run east of Troisdorf. Many S13 services also do not run west of Sindorf. Services operate every 60 minutes.

The route runs on the Cologne–Aachen line (opened by the Rhenish Railway Company between Cologne and Horrem in three stages between 1839 and 1841), the East Rhine Railway (opened to Troisdorf by the Rhenish Railway in 1870, with an extension to Cologne opened in 1874), the Cologne Airport loop (opened in 2004) and the Sieg Railway (opened by the Cologne-Minden Railway Company between 1859 and 1862).

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