The Munich U-Bahn is an electric rail rapid transit network in Munich, Germany. The system began operation in 1972, and is operated by the municipally owned Münchner Verkehrsgesellschaft. The network is integrated into the Münchner Verkehrs- und Tarifverbund and interconnected with the Munich S-Bahn. The U-Bahn currently comprises eight lines, serving 96 stations, and encompassing 103.1 kilometres (64.1 mi) of routes.