Hanover Stadtbahn

The Hanover Stadtbahn is a Stadtbahn system in the city of Hanover, Lower Saxony, Germany. The Stadtbahn opened on 29 September 1975, gradually replacing the city's tramway network over the course of the following 25 years. Currently, the Hanover Stadtbahn system consists of 12 main lines and two supplemental lines ), serving 196 stations , and operating on 121 kilometres of route. The system is run by üstra, which was originally an abbreviation for Überlandwerke und Straßenbahnen Hannover AG. As of 2007, it transported 125 million passengers per year.
Three types of light rail cars operate on the system, the TW 6000, built from 1974 to 1993, the TW 2000 , built from 1997 to 1999, and the TW 3000, which is still being built and was first introduced into A line service in 2015. The system is extensively used, especially during trade shows on the Hanover fairground like CeBIT or the Hannover Messe. It makes up for more than 60% of the GVH transport association's total traffic, spanning over four cities and two counties. Hanover Stadtbahn is complemented by DB-owned Hanover S-Bahn, a suburban heavy rail network which links the outlying suburbs and towns, as well as Hanover Airport, to the city centre.

Wikipedia