S1 (Rhine-Ruhr S-Bahn) Services ran via Düsseldorf Airport Terminal station from 24 May 1998 to 28 May 2000. Services were extended from Düsseldorf to Solingen on 13 December 2009, replacing part of the former line S 7 service. S1 (Rhine-Ruhr S-Bahn) Line S1 is a S-Bahn line on the Rhine-Ruhr network. It is operated by DB Regio. It runs from Dortmund west over Essen to Duisburg. From there it travels south to Düsseldorf and Hilden before continuing to Solingen. It is operated at 20 minute intervals, using coupled sets of class 422 four-car electrical multiple units. Line S 1 runs over lines built
Rhine-Ruhr S-Bahn Eurobahn. Simultaneously, the livery of the trains will change to a green-white livery to keep a uniform appearance although the trains will be run by different operators. The region's lines were mainly built by three railway companies (the Cologne-Minden Railway Company, the Bergisch-Märkische Railway Company and the Rhenish Railway Company), giving the Rhine-Ruhr S-Bahn a variety of lines to use for its routes. This means that the S-Bahn lines use up to five different railways to run over. Rhine-Ruhr S-Bahn The Rhine-Ruhr S-Bahn () is a polycentric and electrically driven S-train network covering the Rhine-Ruhr Metropolitan Region in the German