Abstract
In flood hazardous situation, the effect of congestion and obstruction on people's walking speed may be crucial in evacuation process especially in urbanized areas. In order to simulate these situations, node and arc expression of street network is not enough because this kind of one dimensional expression cannot deal with actions of passing and avoiding the other evacuees.In this study, two types of evacuation simulation models which express the streets as a sequence of rectangles are developed and have been tested. One uses the experimental relation between crowd density and walking speed. The other type uses rule-based collision-avoiding actions of evacuees. The performances of those two models have been compared in the several simulation results in actual flood-plain areas in Japan.
