Spider_map
Spider map
Schematic bus service diagram for an area
A spider map is a schematic diagram of bus services serving a particular locality, as used by Transport for London since 2002.[1] The maps were designed by T-Kartor. Generally mounted on the vertical surfaces of bus shelters it enables potential travellers to select the correct stop to board a bus, and the correct one to alight at. The maps are designed to be self-explanatory in the same way as the London Underground tube map.
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These maps are highly specific to a local area, and it would not be sensible to talk about a spider map for London. About 1500 are needed to describe the London Transport area. The term spider map seems to have come from its users, and although TfL have adopted the term,[1] they are officially known as "bus route diagrams".