British Rail Class 501

British Rail Class 501
A northbound Class 501 train calls at Harrow and Wealdstone. The B2 headcode signifies that this train worked the Broad Street-Watford via Primrose Hill (and vice versa) service.
In service	1957-1985
Manufacturer	British Railways
Number built	57 trainsets
Formation	power car + trailer + driving trailer
Operator(s)	British Rail
Specifications
Car length	57 ft (17 m)
Width	9 ft 6 in (2.90 m)
Height	12 ft 8 in (3.86 m)
Maximum speed	60 mph (97 km/h)
Weight	Total - 106 tonnes
Power output	4 x 185 hp traction motors total 740 hp (552 kW)
Electric system(s)	630 V DC third and fourth rail
Track gauge	standard gauge

A London-bound Class 501 train calls at Harrow and Wealdstone. The B1 headcode signifies that this train worked the Euston-Watford (and vice versa) service.

A refurbished Class 501 train awaits departure time at Broad Street station, shortly before the latter's closure. The B4 headcode signifies that this train worked the Broad Street—Richmond (and vice versa) service.

The British Rail Class 501 electric multiple units were built in 1957/58 for use on the former LNWR/LMS suburban electric network of the London Midland Region. A total of 57 three-car units were built.