The British Rail Class 379 Electrostar is an electric multiple-unit (EMU) passenger train designed and built by the rolling-stock manufacturer Bombardier Transportation. The trains are part of the company's extensive Electrostar family.
|British Rail Class 379 Electrostar|
|In service||March 2011 – February 2022|
|Car body construction||Aluminium alloy, with steel cab ends|
|Maximum speed||100 mph (161 km/h)|
|Traction system||IGBT–VVVF (Bombardier MITRAC DR1000)|
|Electric system(s)||25 kV 50 Hz AC overhead|
|Braking system(s)||Air (disc) and regenerative|
|Coupling system||Dellner 12|
|Multiple working||Within class, and with Classes 375, 376, 377, and 378|
|Track gauge||1,435 mm (4 ft 8+1⁄2 in) standard gauge|
The Class 379 was specifically procured in response to a government white paper issued in 2007, under which £185 million of investment was issued to the West Anglia Main Line (WAML), the bulk of which was spent with Bombardier Transportation to procure the 30-strong Class 379 fleet of EMUs. While the type was largely intended to increase capacity, its introduction did enable the withdrawal of ageing units such as the Class 317 EMUs; the programme also involved various infrastructure improvements. The Class 379's introduction was relatively smooth and brought about a noticeable step up in service quality.
Since their introduction during early 2011, the Class 379 became the principal type operated on the Stansted Express service; it was also tasked with additional services between London Liverpool Street to Stansted Airport, Cambridge and Kings Lynn.[full citation needed] The fleet was initially operated by National Express East Anglia (NXEA) and subsequently by Greater Anglia.
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