2019 Volume 5 Issue 2 Pages A_223-A_232
The purpose of this paper is to develop a spatial computable general equilibrium (SCGE) model that is capable of analyzing the effect of the timing of road development on the population distribution. To this end, we extended the SCGE model developed by Takayama et al.1) ("Development of a spatial computable general equilibrium model with factor mobility and agglomeration economies," Journal of Japan Society of Civil Engineers, Ser. D3, Vol. 72, No. 2, pp. 211-230, 2016) to represent the transportation network in Japan. We then conducted the following two types of counterfactural analyses that replicate the road development from 1986 to 2005: 1) a case where the interregional distance is gradually changed at 5-year intervals, 2) a case where the interregional distance is changed at once. Finally, we showed that the results of these analyses are signi?cantly different, which implies that our framework is capable of representing the effect of the timing of road development on the population distribution.
