Düsseldorf–Solingen railway
…These services are operated at 20-minute intervals, using coupled sets of class 422 four-car electrical multiple units. 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…