of the southern branch towards Großreuth was opened on 15 October 2020. Further extensions are under construction along the southern branch of U3. Planned extensions Out of all Nuremberg U-Bahn lines, U3 is the youngest and the only one with extensions currently under construction. After the northern branch reached an endpoint for the time being at Nordwestring in May 2017, construction is ongoing along the southern branch. An extension west towards Großreuth bei Schweinau was opened on 15 October 2020. Further extensions towards Kleinreuth bei Schweinau and Gebersdorf are already under construction. There is a longstanding plan to use part or all of the old Bibertbahn right of way for further extensions. An expansion of the Northern branch is not planned as of 2018 but variously debated and suggested politically. Stations Operations During the rush hour peak, trains on U3 leave every 3 1/3 minutes (200 seconds) which overlaps with U2 to a 100-second headway between Rathenauplatz and Rothenburger Straße. There is no service at night (roughly between 1 AM and 5 AM) not even on weekends. A few trains beginning on the U3 branches (Nordwestring and Großreuth) are routed to the U2 branch instead (Röthenbach and Airport respectively) and vice versa. Opening dates 28 January 1984: Plärrer ↔ Rothenburger Straße (as part of U2) 23 September 1988: Plärrer ↔ Hauptbahnhof (as part of U2) 24 September 1990: Hauptbahnhof ↔ Rathenauplatz (as part of U2) 14 June 2008: Gustav-Adolf-Straße ↔ Rothenburger Straße (opening of U3) 14 June 2008: Rathenauplatz ↔ Maxfeld (opening of U3) 11 December 2011: Maxfeld ↔ Friedrich-Ebert-Platz 22 May 2017: Friedrich Ebert Platz ↔ Nordwestring 15 October 2020: Gustav-Adolf-Straße ↔ Großreuth bei Schweinau Rolling stock Due to having relied on automatic operation from day one, U3 has only ever had the VAG Class DT3 rolling stock, which was designed for automatic operation. The VAG Class G1 currently in use on U1 is capable of both automatic and manual operation and could in the future be used on U3 but isn't as of 2022. See also Nuremberg U-Bahn U1 (Nuremberg U-Bahn) U2 (Nuremberg U-Bahn) Nuremberg S-Bahn S1 (Nuremberg) S2 (Nuremberg) S3 (Nuremberg) S4 (Nuremberg) References Nuremberg U-Bahn lines de:U-Bahn Nürnberg#Liniennetz