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
International Authority for the Ruhr would have on the German economy, France's response was to suggest the Germans would just have to "make the necessary adjustments" to deal with the inevitable foreign exchange deficit. In 1947 France removed the Saar from Germany and turned it into a protectorate under French economic control. The area returned to German administration on 1 January 1957 but France retained the right to mine from its coal mines until 1981. French plans for the complete detachment of the Ruhr from Germany met with greater resistance. In September 1946 James F. Byrnes, the United States Secretary of State stated in a