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Concept
Trap street
Summary
In cartography, a trap street is a fictitious entry in the form of a misrepresented street on a map, often outside the area the map nominally covers, for the purpose of "trapping" potential plagiarists of the map who, if caught, would be unable to explain the inclusion of the "trap street" on their map as innocent. On maps that are not of streets, other "trap" features (such as nonexistent towns, or mountains with the wrong elevations) may be inserted or altered for the same purpose.
Trap streets are often nonexistent streets; but sometimes, rather than actually depicting a street where none exists, a map will misrepresent the nature of a street in a fashion that can still be used to detect copyright violators but is less likely to interfere with navigation. For instance, a map might add nonexistent bends to a street, or depict a major street as a narrow lane, without changing its location or its connections to other streets.
Trap streets are rarely acknowledged by publishers. One known case is a popular driver's atlas for the city of Athens, Greece, which has a warning inside its front cover that potential copyright violators should beware of trap streets.
In an edition of the BBC Two programme Map Man, first broadcast 17 October 2005, a spokesperson for the Geographers' A-Z Map Company claimed there are "about 100" trap streets included in the London A-Z Street atlas. One such street, "Bartlett Place", a genuine but misnamed walkway (named after Kieran Bartlett, an employee at Geographers’ A-Z Map Company), was identified in the programme and will appear in future editions under its real name, Broadway Walk.
It has been suggested that Google Earth placed Sandy Island, New Caledonia, as the geographical analogue to a trap street, although historical evidence implies that it originated as a cartographical error and Google simply passed the error along.
Trap streets are not copyrightable under the federal law of the United States. In Nester's Map & Guide Corp. v. Hagstrom Map Co.
Official source
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