British Rail Class 314

British Rail Class 314
First ScotRail Class 314 at Patterton in 2011
Interior of a ScotRail refurbished Class 314 unit in August 2018
In service	1979–2019
Manufacturer	British Rail Engineering Limited
Built at	Holgate Road Works, York
Family name	BREL 1972
Constructed	1979
Entered service	1979
Refurbishment	2006–2007 2009–2010 2011–2013
Scrapped	2019–2020
Number built	16
Number preserved	1 (Converted into Class 614)
Number scrapped	15
Successor	Class 318 Class 320 Class 380
Formation	3 cars per unit: DMSO-PTSO-DMSO
Diagram	DMSO vehicles: EA206 PTSO vehicles: EH211
Fleet numbers	314201–314216
Capacity	212 seats
Operator(s)	British Rail ScotRail (British Rail) ScotRail (National Express) First ScotRail Abellio ScotRail
Depot(s)	Glasgow Shields Road Glasgow Hyndland
Line(s) served	Argyle Line North Clyde Line Cathcart Circle Lines Inverclyde Line Paisley Canal Line
Specifications
Car body construction	Steel underframe with aluminium body and roof
Car length	DM vehs.: 19.800 m (64 ft 11.5 in) Trailers: 19.920 m (65 ft 4.3 in)
Width	2.820 m (9 ft 3.0 in)
Height	3.582 m (11 ft 9.0 in)
Floor height	1.146 m (3 ft 9.1 in)
Doors	Double-leaf pocket sliding, each 1.288 m (4 ft 2.7 in) wide (2 per side per car)
Wheelbase	Over bogie centres: 14.170 m (46 ft 5.9 in)
Maximum speed	70 mph (113 km/h)
Weight	DMSO: 34.6 t (34.1 long tons) PTSO: 33.0 t (32.5 long tons) Total: 102.2 t (100.6 long tons)
Traction motors	8 total; 4 per DMSO vehicle (GEC G310AZ or Brush TM61-53, interchangeably)
Power output	660 kW (880 hp)
Electric system(s)	25 kV 50 Hz AC overhead
Current collection method	Pantograph
UIC classification	Bo′Bo′+2′2′+Bo′Bo′
Bogies	BREL BX1
Minimum turning radius	70.4 m (231 ft 0 in)
Braking system(s)	Electro-pneumatic (disc)
Safety system(s)	AWS TPWS
Coupling system	Tightlock
Multiple working	Within class
Track gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge
Notes
Specifications as at August 1982[1] except where otherwise noted.

British Rail Class 314 alternating current (AC) electric multiple units (EMU) were built by BREL at York works from 1978 to 1979. They were the second variety of British Rail's then-standard 1972 design for suburban EMUs, which eventually encompassed 755 vehicles and five Classes (Class 313/314/315/507/508). Able to operate from 25 kV overhead line current collection only, the fleet worked outer-suburban services on the Strathclyde Passenger Transport rail network in Central Scotland.

1. ↑ Vehicle Diagram Book No. 210 for Electric Multiple Units (including A.P.T.) (PDF). Derby: Mechanical & Electrical Engineering Department, British Railways Board. August 1982. EA206, EH211 (in work pp. 14–15, 280–281). Archived from the original (PDF) on 21 January 2015. Retrieved 24 May 2023 – via Barrowmore MRG.