British Rail Class 710

British Rail Class 710 Aventra
London Overground Class 710 at Hackney Downs
The interior of a Class 710 unit
In service	23 May 2019 – present
Manufacturer	Bombardier Transportation
Built at	Derby Litchurch Lane Works
Family name	Aventra
Replaced	Class 172 Class 315 Class 317 Class 378[a]
Constructed	2017–2020
Number built	54
Formation	4 cars per 710/1 and 710/2 unit: DMS-PMS(W)-MS-DMS 5 cars per 710/3 unit: DMS-MS-PMS(W)-MS-DMS
Fleet numbers	710101–710130 710256–710273 710374–710379
Capacity	4-car: 189 seats plus 489 standees 5-car: 241 seats plus 641 standees
Operators	London Overground
Depots	Willesden (London) Ilford (London)
Lines served	Gospel Oak to Barking Riverside Lea Valley Lines Romford to Upminster Watford DC line
Specifications
Car body construction	Aluminium
Train length	4-car: 82.87 m (271 ft 11 in) 5-car: 102.86 m (337 ft 6 in)
Car length	DM vehs.: 21,446 mm (70 ft 4 in) Others: 19,990 mm (65 ft 7 in)
Width	2,772 mm (9 ft 1 in)
Height	3,760 mm (12 ft 4 in)
Doors	Double-leaf sliding plug (2 per side per car)
Maximum speed	75 mph (121 km/h)
Weight	710/1: 144 tonnes (142 long tons; 159 short tons) 710/2: 151 tonnes (149 long tons; 166 short tons) 710/3: 182 tonnes (179 long tons; 201 short tons)
Electric system(s)	Overhead line, 25 kV 50 Hz AC Third rail, 750 V DC (710/2 and 710/3 only)
Current collector(s)	Pantograph (AC) Contact shoe (DC) (710/2 and 710/3 only)
Bogies	Bombardier Flexx-Eco
Braking system(s)	Electro-pneumatic (disc) and rheostatic (Knorr-Bremse RZKK and RZTS)
Safety system(s)	AWS TPWS
Coupling system	Dellner 12
Multiple working	Within class (up to 12 cars total)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Notes/references
Sourced from[1] unless otherwise noted.

The British Rail Class 710 Aventra is a class of electric multiple unit passenger trains built by Bombardier Transportation for use on the London Overground network. The trains are part of Bombardier's Aventra family. The contract to provide 45 four-car trains was awarded in July 2015 and the trains were originally due to enter service in May 2018, although introduction was delayed until May 2019.^[2]

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