Abstract
This study proposes the dynamic route switching model focused on the change in drivers' route choice behavior under multiple traffic information sources. In this route switching model, the state dependence effect on the previous decision making of route choices is considered by explicitly using the behavioral equilibrium condition in which the behavior itself is completely independent at time-variant. Furthermore, the active information acquisition behavior model under multiple traffic information sources is incorporated into the dynamic route switching model to represent the heterogeneity of reaction to the information. Also, the internal validity of the model was verified with consecutive route choice and information acquisition data collected by the travel simulator over computer networks. Consequently, it was confirmed that this enabled to alleviate the bias in conventional static route choice model.