| London Underground 1973 Stock |
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| CATEGORIES ABOUT LONDON UNDERGROUND 1973 STOCK | |
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| 1973 | |
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The 1973 Tube Stock operates on the Piccadilly Line of the London Underground , and were first introduced in 1975 for the opening of the extension to Heathrow Central (Now Heathrow Terminals 1,2,3). A total of 88 trains were built 1972-73 by Metro Cammell of Birmingham (now Alstom ) and entered service 1975-77. They have extra space by the doors to allow for the luggage of passengers travelling to Heathrow Airport. The stock was refurbished in the late 1990s , the last unrefurbished train appearing in passenger service on the 21 August 2000 . Like all London Underground trains, they operate on a four-rail 630V DC power system. The Piccadilly Line 's 1973 stock trains are stored in depots at Cockfosters in the north-east and Northfields in the west. They are painted in the London Underground corporate livery - blue, white and red. The stock is fitted with a non-standard type of Digital Voice Announcer (DVA). Rather than other lines, which use wheel counters or GPS to automatically provide announcements, the 1973 stock announcements must be operated manually by the driver keying in a unique code. This being rather cumbersome, most drivers make their own announcements instead. 76 1973 stock trains are required for the peak time Piccadilly Line service. Each train is made up of two units of three cars:- |
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