Description: Urban traffic network in accordance with the actual building, research describing the urban traffic of the urban road network structure of the database, in this data structure based on G IS techniques rely on the support, collecting a large number of specific road information, the use of D ijk st ra algorithm to achieve a fast shortest path search. According to city traffic conditions on the transport network map boundary value given different weights to achieve optimal path search, a search examples are given- one that contains 61 traffic junctions of the shortest path search results of the search time is about 1. 1
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