Abstract
This paper describes a model to predict the cyclists' behavior of keeping away from the passing automobile, which shows that their behavior is responded to the level of danger which is a function of the passing automobile's velocity, the interval between a bicycle and an automobile and the type of automobile. The model is based on the assumption that in the level of danger, there is a threshold which causes cyclists to avoid the danger, and that cyclists decrease the level of danger by means of keeping away from the passing automobile when the actual level of danger exceeds the threshold. The model was applied to the cyclists on the one-way local street in Saga City and it was found that the proposed model gave reasonable estimation.
