A BASIC STUDY ON TRAFFIC SAFETY EVALUATION SYSTEM FOR URBAN ROAD NETWORK

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  • 道路交通の安全性からみた都市道路網の評価法に関する基礎研究
  • ドウロ コウツウ ノ アンゼンセイ カラ ミタ トシ ドウロモウ ノ ヒョウカ

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It is well recognized that traffic safety is an important evaluation item in urban road network. But few studies have dealt with traffic safety of road network. Therefore, this paper deales with safety evaluation system of urban road network and its plannings.<br>Firstly, in order to improve the accuracy of safety evaluation models, we decompose network into links and nodes, classify them into some groups based on multivariate analysis, and estimate safety evaluation models by groups. Secondly, the estimates by each models are sum up, and then the safety on network is made clear.<br>As a result of applying observed data to the safety evaluation system, reproductions of the models by groups are recognized. Finally, an example of network planning is shown, and the developed evaluation system is applied to it. From these results, we are able to evaluate the enfluences of road and transportation policies on road traffic safety.

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