VAG Class DT1

The VAG Class DT1 (colloquially called "Pegnitzpfeil"^[1]) is an electric multiple unit (EMU) train type operated by the Verkehrs-Aktiengesellschaft Nürnberg on the Nuremberg U-Bahn system since its opening in 1972. It is a derivative of the MVG Class A, in service on the Munich U-Bahn since 1971.^[2][3]

VAG Class DT1
A DT1 train in service on line U1 in June 2016
Manufacturer	MAN
Constructed	1970–1984
Scrapped	2010-2023
Number built	128 vehicles (64 sets)
Number scrapped	24 vehicles (12 sets)
Successor	G1
Formation	2 cars per trainset
Fleet numbers	401/402–527/528
Capacity	290 (98 seated)
Operators	VAG
Specifications
Car body construction	Aluminium
Train length	36,550 mm (119 ft 11 in)
Width	2,900 mm (9 ft 6 in)
Height	3,550 mm (11 ft 8 in)
Doors	3 pairs per side
Maximum speed	80 km/h (50 mph)
Weight	51.7 t
Traction system	Direct current, three-phase
Power output	720 kW (DC drive version) 800 kW (Three-phase version)
Electric system(s)	750 V DC, 3rd rail
Current collector(s)	contact shoe pantograph (maintenance only)
Braking system(s)	Electric brake, pneumatic brake, spring accumulator brake, magnetic track brake
Track gauge	1,435 mm (4 ft 8+1⁄2 in)

Formation

Every DT1 train consists of two permanently-coupled cars, forming a twin-unit. The trains are equipped with automatic couplers, enabling operation of up to two units together to form a four-car train.^[2]

Numbering	xxx	xxx+1
Capacity (total/seated)	145/49	145/49
Weight (t)	51,7

Interior

Seating accommodation consists of transverse seating bays. Passengers can look into the adjacent car through two windows in the inner car end.^[2]

• 
  Interior view

Technical specifications

The design is derived from the MVG Class A. Differences include a magnetic track brake system, that is missing from Munich's Class A trains.^[3][2] The car bodies are made out of aluminium, and the trains are powered by direct current motors. Beginning with units 465/466, built from 1980 until the end of production in 1984, the trains were delivered with three-phase motors.^[2] 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.^[2][1]

History

The trains were built from 1970 until 1984,^[2] and entered passenger service on March 1, 1972, together with the official opening of the Nuremberg U-Bahn system.^[4] DT1 units were lent to Munich on two occasions, were they operated on the Munich U-Bahn system.^[3] They were in service in Munich in 1972, which had a shortage of rolling stock during the 1972 Summer Olympics and in 1980, during the visit of Pope John Paul II.^[2] Following their service in Munich, units 401/402, 403/404, 409/410, 423/424, 425/426 and 427/428 carried commemorative stickers with the Munich Coat of Arms next to the doors of the driving cabs.^[3]

Twelve sets were scrapped in 2010.^[5][6] The DT1 trains have since been replaced by new VAG Class G1 trains, which entered service in mid-2019.^[7] One DT1 train will be preserved.^[5][6]