An accessibility oriented traffic analysis zone division method

When transportation engineers try to monitor the trend of congestions to early warning the connectivity deterioration between every two important districts, problem they meet first is how to divide urban area into small zones which can fit the connectivity and accessibility analysis. In this paper, we solved this problem by calculating and analyzing the topological structure of road network. After comparing several indices, we found Local Depth value in Space Syntax theory is very suitable for helping the zone division. At last, we apply this method in Shanghai urban area and get an encouraging result. Moreover, most of accessibility oriented zones divided by local depth value also agrees well with people´s cognition of regions.