20 September 1980: Weißer Turm ↔ Bärenschanze 20 June 1981: Bärenschanze ↔ Eberhardshof 20 March 1982: Eberhardshof ↔ Jakobinenstraße 7 December 1985: Fürth Jakobinenstraße ↔ Fürth Hauptbahnhof 4 December 1998: Fürth Hauptbahnhof ↔ Fürth Stadthalle 5 December 2004: Fürth Stadthalle ↔ Fürth Klinikum 9 December 2007: Fürth Klinkum ↔ Fürth Hardhöhe Planned extensions There are no detailed plans for any extension of the line. However, there have in the past been plans for an extension towards Fürth Kieselbühl, which are however conditioned on future infill development at that site which has been put off for the time being. On the other end of the line U1 was started at Langwasser and built "inwards" and Langwasser remains the terminus with no planned extensions. Branching extensions have been put forward variously but as of 2018 none are likely to be built for the foreseeable future. Occasionally there is debate about a link of some kind between the Nuremberg S-Bahn stop at Fischbach (currently served by S2), but as of 2022 it is unclear whether such a link would entail subway or tram extension and when or if it would be built at all. Proposed ATC As both lines U2 and U3 have been run driverless for over a decade, there are sometimes calls for the conversion of U1 to driverless operation. However, other than the new generation of trains ("G1") entering service from late 2019 onward being built with a removable driver cabin, no provision for driverless operation has been made as of 2020. Rolling stock The U1 has seen service by all major series of rolling stock ever in regular operation on the Nuremberg U-Bahn. This includes the first generation VAG Class DT1, the newer VAG Class DT2, the newest VAG Class G1 (based on the Siemens Inspiro platform) and even the MVG Class A cars that have been used to alleviate temporary or long lasting rolling stock shortages in Nuremberg. The first series of VAG Class DT3 was initially designed for automatic operation only, as they have no permanent driver's cabin (an emergency use control panel is "hidden" in the front part of the cars during normal operations) and thus the older vehicles in this series can only be used on U2 and U3. However, a modified series, designated "DT3F" was introduced on U1 a few years after the introduction of the driverless DT3, the main difference being the addition