The
Upper Rhine Railway Company (, 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).