Information Inducing Speedy and Non-concentrated Evacuation Behavior

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  • NAKAMURA Mayumi
    Graduate School of Information Systems, University of Electro-Communications
  • TANAKA Kenji
    Graduate School of Information Systems, University of Electro-Communications
  • INABA Midori
    Graduate School of Information Systems, University of Electro-Communications

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Other Title
  • シミュレーション分析による避難所への偏りのない迅速な移動を促す情報提供の検討
  • シミュレーション ブンセキ ニ ヨル ヒナンジョ エ ノ カタヨリ ノ ナイ ジンソク ナ イドウ オ ウナガス ジョウホウ テイキョウ ノ ケントウ

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Abstract

<p>When occurrence of a disaster is predicted, many people gather in evacuation centers to escape from damage or to seek for living spaces, and information. If the disaster occurs in a city including some areas whose population densities are greatly different one another, congestion degree of the evacuation centers in these areas may be out of balance. In that case, some people may leave for the centers filled to capacity. It may also result in delay time when all residents finish evacuating. The aim of this study is to clarify what kind of information should be provided to residents to facilitate speedy evacuations and to avoid from concentration of the evacuees to certain centers. For this purpose, simulation experiments were performed. We compared evacuation behavior under the distance-to-each center information with that under the combined information about the distance and the entering rate for capacity evacuees of each center. The termination time of each simulation and the shift of the percentage of evacuees' capacity of each center were measured. As a result, there were alternately increment phases and plateaus in the number of evacuated residents in every condition. In addition, effectiveness of information to shorten the termination times of evacuation depended on the positions of evacuation centers in the areas. Combined information with the evacuees' capacity of the centers shortened the termination times of evacuation when there were long distances among the evacuation centers. In contrast, only the distance information was effective for reducing the termination times in the conditions that the centers were close each other. These findings, which depend on our models and parameters for the simulation, suggest that it is necessary to select appropriate information as a service to enhance the evacuations smoothly.</p>

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