British Rail Class 311
class of 19 three-car electric multiple units
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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.
| British Rail Class 311 | |
|---|---|
 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(s) | British Rail |
| Specifications | |
| Maximum speed | 75mph (121km/h) |
| Weight | Total - 129 tons |
| Braking system(s) | Air (Auto/EP) |
| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) |
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