VAG Class DT3

The VAG Class DT3 is an electric multiple unit (EMU) train type operated by the Verkehrs-Aktiengesellschaft Nürnberg on the Nuremberg U-Bahn system. It is the first type of rolling stock on the Nuremberg U-Bahn that has gangways between the individual cars.[1]

VAG Class DT3
A Class DT3-F train at Hauptbahnhof U-Bahn station in June 2016
ManufacturerSiemens Transportation Systems
Constructed2004–2011
Number built92 vehicles (46 sets)
Formation2 cars per trainset
Fleet numbers701/702–763/764 (DT3)
Capacity308 (82 seated)
Operator(s)VAG
Specifications
Car body constructionAluminium
Train length37,720 mm (123 ft 9 in)
Width2,900 mm (9 ft 6 in)
Doors3 pairs per side
Maximum speed80 km/h (50 mph)
Weight59,2 t
Traction systemThree-phase
Power output1,120 kW
Electric system(s)750 V DC, 3rd rail
Current collection methodcontact shoe
pantograph (maintenance only)
Braking system(s)Electric brake, pneumatic brake, spring accumulator brake
Safety system(s)ATC, ATO, ATP
Track gauge1,435 mm (4 ft 8 1⁄2 in)

Formation

Every DT3 train consists of two permanently coupled cars, forming a twin-unit. The cars are connected with a gangway, allowing passengers to walk into the adjacent car. The trains are equipped with automatic couplers, enabling operation of up to two units together to form a four-car train.[1]

Interior

Seating accommodation consists of transverse seating bays as well as folding seats. The trains have displays which show the name of the next station, and CCTV cameras.[1] Passenger information screens and a passenger counting system are implemented in the DT3-F trains.[2][3]

  • Interior view

Technical specifications

The car bodies are made out of aluminium, and the trains are powered by three-phase-asynchronous motors.[1] As they are used in automatic operation, the DT3 trains are not equipped with full driving cabs, but only with small concealed driving panels, which are used for maintenance.[4] The DT3-F trains are equipped with full driving cabs, enabling them to be used on driver operated services on non-automated lines. The cabs are designed to be removed in case of a conversion for fully automated operation.[5] Besides the power supply by contact shoes, every unit is also equipped with a pantograph, as parts of the maintenance facilities are electrified with overhead lines.[1]

History

The first unit was delivered in April 2004 as part of the "Rubin" project, which planned to introduce fully automated trains on the Nuremberg U-Bahn.[4][1] Rubin is an acronym for Realisierung einer automatisierten U-Bahn in Nürnberg (Implementation of an automated U-Bahn in Nuremberg).[6][7] Automated test running on line U3 began in January 2005.[4][1] On May 4, 2008, the first DT3 trains entered automatic revenue service on line U3.[6] Driverless operation was officially launched on June 14, 2008, two years later than anticipated.[8][9] Originally scheduled for 2006, the official launch of driverless operation had to be pushed back to 2008 due to technical difficulties[10] and mechanical problems, which resulted in the return of two prototype DT3 sets to the supplier Siemens.[11] Fully automatic trial runs on line U2 began on January 13, 2009, while the trains were already in automatic revenue service on line U3.[12]

A second batch of 14 DT3 trains was ordered in 2008.[13] These units, classified as DT3-F, feature a full control cab for manual operation, but also can be operated fully automatic.[13] First DT3-F units arrived in Nuremberg at the end of August 2010.[5] The DT3-F trains entered service in May 2011.[14]

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See also
  • List of driverless trains

References
  1. Pabst, Martin (2006). S-Bahn- und U-Bahn-Fahrzeuge in Deutschland [S-Bahn and U-Bahn vehicles in Germany] (in German) (2nd ed.). GeraMond. pp. 74–77, 84, 85. ISBN 3-7654-7366-9.
  2. "VAG Nürnberg: Der erste DT3-F ist angekommen" [VAG Nürnberg: The first DT3-F has arrived]. eurailpress.de (in German). DVV Media Group GmbH. August 31, 2010. Archived from the original on November 6, 2018. Retrieved November 5, 2018.
  3. Grewe, Tilmann (June 7, 2011). "An der U-Bahn-Tür wird fast jeder gezählt" [Almost everyone gets counted at the subway door]. nordbayern.de (in German). Verlag Nürnberger Presse Druckhaus Nürnberg GmbH & Co. KG. Archived from the original on November 6, 2018. Retrieved November 5, 2018.
  4. "Rubin moves into testing phase". metro-report.com. Metro Report International. February 1, 2005. Archived from the original on November 6, 2018. Retrieved November 3, 2018.
  5. "Nürnberg DT3-F metro train arrives". railwaygazette.com. Railway Gazette. September 17, 2010. Archived from the original on November 6, 2018. Retrieved November 3, 2018.
  6. "Driverless operations start in Nürnberg". railwaygazette.com. Railway Gazette. May 6, 2008. Archived from the original on July 19, 2016. Retrieved November 3, 2018.
  7. "Nürnberg testet erste fahrerlose U-Bahn" [Nuremberg is testing the first driverless subway]. spiegel.de. SPIEGEL ONLINE GmbH & Co. KG. December 6, 2006. Archived from the original on November 3, 2018. Retrieved November 3, 2018.
  8. Eisenack, Gabriele (June 12, 2018). "Start vor 10 Jahren: Fahrerlose U-Bahn laut VAG ein Erfolg" [Start 10 years ago: Driverless U-Bahn is a success, according to VAG]. nordbayern.de (in German). Verlag Nürnberger Presse Druckhaus Nürnberg GmbH & Co. KG. Archived from the original on November 6, 2018. Retrieved November 5, 2018.
  9. Feddern, Boi (June 15, 2008). "Fahrerlose U-Bahn nimmt in Nürnberg offiziell den Betrieb auf" [Driverless U-Bahn officially begins operation in Nuremberg]. heise.de (in German). Heise Medien GmbH & Co. KG. Archived from the original on September 10, 2019. Retrieved November 5, 2018.
  10. Fischer, André (June 14, 2013). "Nürnberger U-Bahn fährt seit fünf Jahren fahrerlos" [Nuremberg U-Bahn runs driverless since five years]. nordbayern.de (in German). Verlag Nürnberger Presse Druckhaus Nürnberg GmbH & Co. KG. Archived from the original on November 7, 2018. Retrieved November 5, 2018.
  11. "Rubin project loses momentum". railwaygazette.com. Railway Gazette. May 1, 2007. Archived from the original on November 6, 2018. Retrieved November 5, 2018.
  12. "Urban rail news in brief - February 2009". metro-report.com. Metro Report International. February 21, 2009. Archived from the original on November 6, 2018. Retrieved November 3, 2018.
  13. Grewe, Tilmann (September 27, 2008). "VAG hat 14 neue U-Bahnzüge bestellt" [VAG has ordered 14 new U-Bahn trains]. nordbayern.de (in German). Verlag Nürnberger Presse Druckhaus Nürnberg GmbH & Co. KG. Archived from the original on September 10, 2019. Retrieved November 5, 2018.
  14. Reinhardt, Winfried (2014). Geschichte des Öffentlichen Personenverkehrs von den Anfängen bis 2014: Mobilität in Deutschland mit Eisenbahn, U-Bahn, Straßenbahn und Bus [History of public transport from the beginning to 2014: Mobility in Germany with railway, subway, tramway and bus] (in German). Springer-Verlag. pp. 792, 793. ISBN 978-3-658-06628-4.
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