Düsseldorf–Solingen railway

The section between Düsseldorf Hauptbahnhof and Düsseldorf-Eller was opened on 1 October 1891[2] by the Eisenbahndirektionen Cöln rechtsrheinisch (Railway division of Cologne Rhine Right Bank of the Prussian state railways). Between Eller and Hilden the line originally used the Troisdorf–Mülheim-Speldorf line, which was opened by the Rhenish Railway Company on 18 November 1874,[3] but separate tracks were opened in 1917.[4] The section between Hilden and Ohligs (now Solingen Hauptbahnhof) was opened on 3 January 1894.[5]

Düsseldorf-Eller station

S-Bahn services started operating over the line to Düsseldorf Airport Terminal on 27 October 1975; these services were eventually branded as line S 7. On 13 December 2009, line S 7 services were discontinued and operations on the Düsseldorf–Solingen line were taken over by an extension of line S 1 from Düsseldorf Hauptbahnhof. These services are operated at 20-minute intervals, using coupled sets of class 422 four-car electrical multiple units.[6]

There are plans to electrify the Wuppertal-Oberbarmen–Solingen railway and to extend the service to Remscheid and Wuppertal.

The entire line is in the area of the Verkehrsverbund Rhein-Ruhr (Rhine-Ruhr Transport Association), which establishes service levels and sets fares for it.