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
Occupation of the Ruhr huge. As some of the payments were in raw materials, German factories were unable to function, and the German economy suffered, further damaging the country's ability to pay. By late 1922, the German defaults on payments had grown so regular that a crisis engulfed the Reparations Commission; the French and Belgian delegates urged occupying the Ruhr as a way of forcing Germany to pay more, while the British delegate urged a lowering of the payments. As a consequence of a German default on timber deliveries in December 1922, the Reparations Commission declared Germany in default, which led to the Franco-Belgian