High Quality Content by WIKIPEDIA articles! The Upper Rhine Railway Company (German: Oberrheinische Eisenbahn, OEG), formerly the Oberrheinische Eisenbahn-Gesellschaft AG (Upper Rhine Railway Company Ltd), later MVV OEG AG, later operated by MVV Verkehr AG (the operator of the Mannheim Tramway) and now part of Rhein-Neckar-Verkehr (Rhine-Neckar Transport), is a metre gauge railway between the three cities of Mannheim, Heidelberg and Weinheim. A small section of standard gauge line between Heidelberg and Schriesheim was used only for moving freight. It is known by the acronym of OEG of the original operating company. It is listed in the timetable of Deutsche Bahn as route 669 and forms part of the network that is administered by the Verkehrsverbund Rhein-Neckar (Rhine-Neckar Transport Association, VRN).