Evaluation of Toll Free Expressway Policy in Japan by using a General Equilibrium Model

概要

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This paper examines the effects of toll free policy for expressways which is to be introduced in Japan. A model that is developed by combining a general equilibrium model of a multi-city economy and deterministic user equilibrium traffic assignment model is applied for examining the effects of the toll free policy. In the model, cities are linked by a road network including toll expressways. It is shown that the toll free policy applied to all of the expressways in Hokkaido, Japan brings about the social welfare of 31.2 [billion JPY/year], and that applied to some part of expressways where traffic congestion rarely occurs brings about the social welfare of 41.2 [billion JPY/year]. The social welfares presented in this study are calculated from the utility levels of households in the economy.