Abstract
As an attempt to express the essential characteristics of inter-regional trade, we propose a demand forecasting model based on the analytical frameworks of inter-regional and inter-industry linkage analysis and the spatial price equilibrium model. This model seems to be useful in predicting inter-regional freight demands in conditions of semi-open and middle-term equilibrium. At the same time, we explain the kind of data to be considered for practical use, using a complementary model and an estimation of a model. Furthermore, we show an application results to motorway improvement project in Japan and we verify the applicability of our model.