British Rail Class 311

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British Rail Class 311
311104 at a station.jpg
Unit 311104 in blue/grey livery awaiting passengers at Partick.
In service 1967 - 1999
Manufacturer Cravens
Number built 19
Formation 3 cars per trainset
Capacity 236 seats
Operator British Rail
Specifications
Maximum speed 75mph (121km/h)
Weight Total - 129 tons
Braking system(s) Air (Auto/EP)
Gauge 1,435 mm (4 ft 8+12 in)

The British Rail Class 311 alternating current (AC) electric multiple units (EMU) were built by Cravens at Sheffield in 1967. They were intended for use on the line from Glasgow Central to Gourock and Wemyss Bay, which was electrified in 1967.