The Wuppertal Suspension Railway is a suspension railway in
Wuppertal, Germany. Its full name is "Electric Elevated Railway
(Suspension Railway) Installation, Eugen Langen System". It is the oldest
electric elevated railway with hanging cars in the world and is a unique
system.
The cars are suspended from a single rail built underneath a
supporting steel frame. The cars hang on wheels which are driven by an electric
motor operating at 600 volts DC, fed from an extra rail