20 vehicles were ordered. In contrast to the prototype, the production cars in the interior were adapted to the new standard and got gray instead of white sidewalls and red plastic seats instead of the originally installed fabric seats. The newer Type V lines also feature yellow instead of gray-red handrails, improved interior displays and warning lights to signal the door closing operation. A car consists of eight pairs of Vis-à-vis seats in the middle section and six seats each at the car transitions. At the beginning and end of the trains there are multipurpose compartments with four folding seats each and automatically extending ramps at each station to close the platform gap. They are the first Vienna subway cars to have air conditioning and are factory-equipped with video surveillance. In order to keep the station stays short and avoid blocking by passengers, the doors have only sensitive sensor edges as anti-trap instead of light barriers. An individually opened door therefore only closes again as part of a central closing operation. All entrances can also be opened centrally from the driver's seat. The trains were equipped with extensive safety technology, such as fire detectors in the roof areas, temperature sensors and dry extinguishing pipes on the undercarriage. Smoke or temperature exceedances are immediately transmitted to the driver. The type V cars have 260 seats and 618 standing places. Their top speed is . The exterior design is the responsibility of Porsche Design. A similar variant of this Type is also in service in Oslo, Norway as type OS MX3000. X-Cars Siemens was contracted to deliver and maintain 34 6-car Type X trains in September 2017. The order includes an option for an additional eleven trains. The vehicles are suited for both fully automated operation and driver operation. They will be used on the future Line U5 in a driverless configuration, and will serve on Lines U1 to U4 with drivers. Delivery started in spring of 2020 with a pre-series vehicle, with the last trains in this order scheduled for delivery at the end of 2030. Line U6 The Line U6 was originally slated for rapid transit conversation like Line U4. However taking into account historic preservation of original Vienna Stadtbahn stations and structures, construction costs and disruption of existing services, decided to keep Line U6 with much of its original operations. Today Line U6 is unique when compared to other