The present invention relates to a starting point-based traffic allocation method using the shortest path which predicts how many cars actually pass over a road and which is then used in the field of road planning in order to analyze the traffic conditions of a corresponding road and nearby roads when the road is newly constructed or extended. The method has the effect of greatly reducing the time taken for a search and of increasing work efficiency by shortening the considerable time expended for doing related work in the field of traffic planning.
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