British Rail Classes 316 and 457

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British Rail Classes 316 and 457
British Rail Class 457 - unit 7001 - vehicle 67300.JPG
67300 at Electric Railway Museum, Warwickshire.
In service 1989 (as Class 457)
1990 (as Class 316)
Number built 1
Formation 4 cars
Operator British Rail
Specifications
Traction system 750 V DC (Class 457)
25 kV AC (Class 316)
Gauge Standard

Class 316 and Class 457 were two suggested TOPS classifications. They were given to a single electric multiple unit (EMU) at different stages of its use as a prototype for the Networker series.