|British Rail Class 305|
|In service||1960 - 2002|
|Number built||71 trainsets|
|Formation||3/4 cars per trainset|
|Maximum speed||75 mph (121 km/h)|
|Electric system(s)||25 kV AC Overhead|
|Track gauge||4ft 8.5in (1,435 mm)|
The British Rail Class 305 was an alternating current (AC) electric multiple unit (EMU). Under the pre-1973 British Rail numbering system, the class was known as AM5. When TOPS as introduced, the class became Class 305.