British Rail Class 710

British Rail Class 710 *Aventra*
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 315; Class 317; Class 378;
Constructed	2017–2020
Number built	54
Formation	4-car: (710/1 & 710/2); DMS-PMS(W)-MS-DMS; 5-car: (710/3); DMS-MS-PMS(W)-MS-DMS;
Fleet numbers	710101–710130; 710256–710273; 710374–710379;
Capacity	4-car: (710/1 & 710/2); 189 seats plus 489 standees; 5-car: (710/3); 241 seats plus 614 standees;
Operator	London Overground
Depots	Willesden (London); Ilford (London);
Lines served	Liberty line; Lioness line; Mildmay line; Suffragette line; Weaver 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 (120 km/h)
Weight	710/1: 144 t (142 long tons; 159 short tons); 710/2: 151 t (149 long tons; 166 short tons); 710/3: 182 t (179 long tons; 201 short tons);
Electric systems	Overhead line, 25 kV 50 Hz AC; Third rail, 750 V DC (710/2 & 710/3 only);
Current collection	Pantograph (AC); Contact shoe (DC) (710/2 & 710/3 only);
Bogies	Bombardier Flexx-Eco
Braking systems	Electro-pneumatic (disc) and rheostatic; (Knorr-Bremse RZKK and RZTS);
Safety systems	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 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.