2021 Volume 13 Issue 1 Pages 23-31
To promote evacuation at disaster occurrence, appropriate local information needs to be certainly transmitted to evacuees. However, in a city disaster case, the people who are not living in and just visit the city, for instance as tourists, might have little knowledge on the local evacuation information. In such cases, disaster prevention administrative radio systems, that are operated as one of the information transmission systems at present, are useful to transmit wide-area disaster information, but inappropriate for transmitting adaptive localized evacuation information. Therefore, we propose a narrow-area specific messaging system using taxis as information transmitters. As the experimental results, it is found that decentralized and unbiased taxi allocation can accelerate evacuation completion. Moreover, we propose a method to select evacuation sites by using the elapsed time after the disaster occurrence and the hazard map information. The proposed method is compared with the shortest-path finding method of the evacuation sites by computer simulations. Consequently, it is found that when the evacuation behavior is delayed, the proposed method outperforms the shortest-path finding method by about 5%.
