page_title: British Rail Class 378
section_title: Fleet
hierarchical_section_title: British Rail Class 378 / Fleet
caption_attribution_description: English: London Overground Class 378/2
context_page_description: The British Rail Class 378 Capitalstar is an electric multiple unit passenger train, which was specifically designed for the London Overground network. It is part of Bombardier Transportation's Electrostar family. The design is similar to the Class 376 trains used by Southeastern, featuring the same wider metro-style sliding pocket doors for more efficient boarding and alighting. However, it also has significant differences from the Class 376, such as fully longitudinal seating similar to that used on London Underground rolling stock to give more standing and less seating capacity and reduce overcrowding, suitable for the high-volume metro-style services on London Overground.
  A total of 57 trains were built, with the first entering service in July 2009.
context_section_description: The Class 378 fleet is currently formed of two separate subclasses, DC-only 378/1 and dual-voltage (AC and DC) Class 378/2:
  Class 378/1 - 20 four-car units were ordered. These units operate services on the extended East London Line, and are 750 V DC only. These trains, which are designated Class 378/1, replaced the A60/A62 Stock previously used on the line. They entered service on 27 April 2010, on the preview service between Dalston Junction and New Cross / New Cross Gate. The service was extended to Crystal Palace and West Croydon on 23 May 2010. In common with all trains in the Electrostar family, these DC-only 378/1 units have a recessed roof space for the fitting of a pantograph and other equipment for dual-voltage working in the future if necessary. The Southern services on the South London line were withdrawn in 2012 and replaced by a new London Overground service operated using new air-conditioned 4-car Class 378 units.
  Class 378/2 - 37 dual-voltage four-car units ordered for the North London, West London, East London lines. These units have dual-voltage capability, taking current at 25 kV AC from overhead wires or 750 V DC from third rail. These trains replaced the Class 313 and Class 508 units in 2010. The first 24 units were originally three-car units designated Class 378/0 (378 001-378 024), and were redesignated Class 378/2 (renumbered 378 201-378 224) as each unit received its additional carriage in late 2010. The remaining 13 units (378 225-378 234 and 378 255–378 257) were built as four-car Class 378/2s from the outset.
  In February 2013, approval was gained for the procurement of 57 additional vehicles to lengthen the Class 378 fleet from four to five cars. TfL's Business Plan provides for the start of five-car services on the East London line from November 2014, and on the rest of the electrified Overground network by the end of 2015. In January 2016, TfL announced that all 57 units were now running with five cars. In December 2018, unit 378 232 was shortened back to four cars to run on the Gospel Oak to Barking line while delays to delivery of Class 710 are resolved. 378 206 and 378 209 were also shortened to 4 carriages, as temporary cover when the class 172s went off-lease.
caption: London Overground Class 378/2
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