(IVB), a public authority operating a network of bus and tram routes. The metre-gauge tram network consists of two city lines, 1 and 3, and two lines serving the surrounding area: line 6, the Innsbrucker Mittelgebirgsbahn to Igls, and line STB, the Stubaitalbahn running through the Stubai Valley to Fulpmes. The network is planned to be enlarged during the coming years to reach Hall in Tirol in the east and Völs in the west (thus replacing a former tram line [closed in the late 1960s] from Innsbruck to Solbad Hall, as Hall in Tirol was then known). Numerous bus lines serve the inner city and connect it with surrounding areas. Until 2007 the bus network included two trolleybus routes, but these were abandoned in preparation for planned expansion of the tram network.
In December 2007, the Hungerburgbahn, a funicular service to the district of Hungerburg, was reopened after a two-year closure for extensive rebuilding, with partial realignment and a new extension across the Inn River and into central Innsbruck. The line was also equipped with new vehicles. The rebuilt line is operated by a private company, Innsbrucker Nordkettenbahnen
