The TW 6000 is a type of articulated light rail vehicle used on the Hanover Stadtbahn system, originally manufactured by Düwag, AEG, Kiepe and Siemens, the later batches being built by LHB (now part of Alstom).
The vehicle can serve both high platforms and street-level stops; it has cabs at both ends, thus eliminating the need for turning loops. It was unique in Germany at the time for featuring thyristor chopper control and a contemporary design by Prof. Herbert Lindinger.
A total number of 260 were built from 1974 to 1993, of which the first series of 100 was built by Düwag in Düsseldorf from 1974 to 1978, whilst the second to eighth series (160 in total) were built by LHB in Salzgitter from 1979 to 1993. From 2002 on, 82 units were sold to Budapest, Hungary and Den Haag, The Netherlands.
In 2013, üstra ordered 100 new vehicles (with an option for 46 more) to replace the aging TW 6000 vehicles; those vehicles, which are known as the TW 3000, are being delivered between 2014 and 2018.