London Underground 2024 Stock

London Underground 2024 Stock
2024 Stock approaching Turnham Green during testing
Stock typeDeep-level tube
ManufacturerSiemens Mobility
Built at
Family nameInspiro
Replaced1973 Stock
Constructed2022 (prototypes)–present
Entered servicePlanned between December 2026 and June 2027
Formation9 cars per train
Capacity1,042 per train (256 seated)
Depots
Line servedPiccadilly
Specifications
Car body constructionBionic lightweight aluminium
Train length113.7 m (373 ft 38 in)
Width2.648 m (8 ft 8+14 in)
Height2.844 m (9 ft 3+1516 in)
Maximum speed100 km/h (62 mph)
Weight155.401 tonnes (152.947 long tons; 171.300 short tons)
Traction motors16x Siemens 1DB1619-0GA04 Permanent Magnet Synchronous Motor
Power output2.5 MW (3,400 hp) (trainset total)
AccelerationStarting: 1.4 m/s2 (4.6 ft/s2)
AuxiliariesSiC-MOSFET with SSPC
Electric systemsFourth rail, 630 or 750 V DC
Current collectionContact shoe
UIC classification2′Bo′+0′+Bo′Bo′+0′+Bo′Bo′+0′+Bo′Bo′+0′+Bo′2′
BogiesSiemens SF1800
Coupling systemDellner
Track gauge1,435 mm (4 ft 8+12 in) standard gauge
Notes/references
London transport portal

The London Underground 2024 Stock, officially known as 2024 Tube Stock, and known during development as the New Tube for London (NTfL), is a type of London Underground rolling stock built by Siemens Mobility at its facilities in Goole, United Kingdom and Vienna, Austria. It is part of the Siemens Inspiro family of metro and rapid-transport trains.

An initial batch of 94 nine-car trains has been ordered at a cost of £1.5 billion to replace the 1973 Stock trains on the Piccadilly line, with options for a total of 250 trains allowing replacement of all existing trains on the deep-level Bakerloo, Central and Waterloo & City lines. The first train was delivered for testing in London in October 2024. The trains are due to enter service between December 2026 and June 2027. The trains are planned to be operated by a train driver, with future potential for driverless operation.