U-Bahn lines with overhead lines, low floor LRVs and optical signals (no LZB). T-Class Since 1993 Bombardier Wien has been developing wide, double-articulated low-floor vehicles of the type T, which are similarly deployed as Type 400 on the Lokalbahn Wien-Baden and serve as the basis for the successful vehicle family Flexity Swift are. A set consists of three permanently coupled cars, a train of four sets. By 2008, short-cut trains from three sets also operated during off-peak hours. The T-cars drove initially in conjunction with the older E6 / c6 cars, so that each train was a low-floor car, today only trains made entirely from T- and T1-cars. Seats: 232, standing room: 544. A video-monitored, equipped with air conditioning, electronic interior and exterior displays and new design further development of the Type T comes since May 2008 as Type T1 used and replaced the old E6 / c6 high-floor suits. Since 24 December 2008 only vehicles type T and T1 on the U6. The T and T1 cars can be coupled with each other so that trains from T and T1 cars can run mixed. At the end of 2009, the T-cars began to be equipped with electronic indoor and outdoor displays and to improve the safety of passengers, personnel and against vandalism with a video surveillance of the interiors and thus visually align the T1. Also, the older cloth seats in the T-wagons are gradually being replaced by new, red plastic seats with yellow handles, which can also be found in the T1 car and in the Type V metro car. The vehicles of the Tx type family will also receive successive warning lights for signaling the door closing operation. So that they can be transferred via the tram network to the main workshop of Wiener Linien, the T and T1 cars are equipped for tram operation. Former Trains From the light rail operation, the wide, six-axle articulated wagons type E6 (railcar) and c6 (sidecar) "type Mannheim" were taken over, which were built in 1979 by Lohner and Rotax in Duewag license. An entire train offered 192 seats and 432 standing places. Until the end of 2008, the trains still operated in conjunction with T-cars, i.e. E6 + c6 + T + c6 + E6. In May 2008, the delivery of the type T1 began, which should completely replace the type E6 / c6. On 23 December 2008 E6