Ruhrort Ruhrort Ruhrort is a district within the German city of Duisburg situated north of the confluence of the Ruhr and the Rhine, in the western part of the Ruhr area. Ruhrort has the largest river harbour in the World, with quays extending nearly 40 kilometres along the river, and it is the principal inland shipping port in Germany. Ruhrort was founded in 1371 as a customs site and was granted town status in 1551. Due to its convenient position on the junction of two important waterways a shipping guild and a harbour had been created by 1665, mainly for trading
S4 (Rhine-Ruhr S-Bahn) S4 (Rhine-Ruhr S-Bahn) Line S 4 is an S-Bahn of the Rhine-Ruhr S-Bahn, running from to the Dortmund suburb of Dortmund-Lütgendortmund. It is operated by DB Regio on behalf of Verkehrsverbund Rhein-Ruhr. It is operated at 20-minute intervals using class 422 four-car electrical multiple units. Line S 4 runs over several lines: S-Bahn services commenced between old Lütgendortmund station and Unna station on 3 June 1984. The section from Germania to old Lütgendortmund station was closed on 31 August 1987 and operations on the new line to Lütgendortmund commenced on 23 May 1993. Extension of the S 4 line from