The Tube map is the commonly-used name for the schematic diagram that represents the lines, stations, and zones of London's rapid transitrail system, the London Underground.
The first coordinated map of London's underground railway lines was produced in 1908 and highlighted the routes on a traditional map also showing other geographical features. During the 1920s attempts were made to make the map more readable by removing unnecessary information until only the River Thames remained; the maps remained geographic.
The current version is a schematic diagram and no longer represents geography but relationships. It considerably distorts the actual relative positions of stations, but accurately represents their sequential and connective relationships with each other and their placement within the zones. The basic design concepts, especially that of mapping topologically, have been widely adopted around the world for other route maps.
The original schematic map was designed in 1931 by Underground employee Harry Beck, who realised that, because the railway ran mostly underground, the physical locations of the stations were irrelevant to the travellers; only the topology of the system mattered. Beck based his diagram on a similar mapping system for underground sewage systems.
Image 10London Underground A60 Stock (left) and 1938 Stock (right) trains showing the difference in the sizes of the two types of rolling stock operated on the system. A60 stock trains operated on the surface and sub-surface sections of the Metropolitan line from 1961 to 2012 and 1938 Stock operated on various deep level tube lines from 1938 to 1988.
Image 38Sailing ships at West India Docks on the Isle of Dogs in 1810. The docks opened in 1802 and closed in 1980 and have since been redeveloped as the Canary Wharf development.
Image 40The newly constructed junction of the Westway (A40) and the West Cross Route (A3220) at White City, circa 1970. Continuation of the West Cross Route northwards under the roundabout was cancelled leaving two short unused stubs for the slip roads that would have been provided for traffic joining or leaving the northern section.
Image 41"Boris Bikes" from the Santander Cycles hire scheme waiting for use at a docking station in Victoria.
Image 46Arguably the best-preserved disused station building in London, this is the former Alexandra Palace station on the GNR Highgate branch (closed in 1954). It is now in use as a community centre (CUFOS).
Image 47The multi-level junction between the M23 and M25 motorways near Merstham in Surrey. The M23 passes over the M25 with bridges carrying interchange slip roads for the two motorways in between.
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