Rhine-Ruhr S-Bahn 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 federal state of North Rhine-Westphalia. This includes most of the Ruhr (and cities such as Dortmund, Duisburg and Essen), the Berg cities of Wuppertal and Solingen and parts of the Rhineland (with cities such as Cologne and Düsseldorf). The easternmost city within the S-Bahn Rhine-Ruhr network is Unna, the westernmost city served is Mönchengladbach. The S-Bahn operates in the areas of the Verkehrsverbund Rhein-Ruhr (VRR) and Verkehrsverbund Rhein-Sieg (VRS) tariff associations, touching areas of Aachener Verkehrsverbund at Düren
Ruhr of half a dozen rivers in the Ruhr district, in addition to the Rhine. The Rhine itself runs through the heart of the Ruhr district." According to "Merriam Webster's Geographical Dictionary", a standard reference on place names around the world, the name "Ruhr" refers to the river. The name preferred for the region in this dictionary is "Ruhrgebiet", followed by "Ruhr Valley". The Ruhr has an oceanic climate in spite of its inland position, with mildening winds from the Atlantic travelling over the lowlands to moderate temperature extremes, in spite of its relatively northerly latitude that sees significant variety in