Abstract
There are some fears and concerns about the question of its effects on population movement. P.Allen presented a dynamic model of central places based on the mutual interaction of the spatial distribution of population and employment opportunities. The model is developed in which the change in the population distribution of a region is linked to the employment pattern and this latter in tern to the population distribution through the concepts of central place theory. The results is a dynamic model of interacting urban centers in which the fluctuations of the system play a vital role, and with which the effect of an infrastructure decision can be estimated in the long term. In his study, using the P.Allen model, the effects of the implementation of free charge of expressways to the population transition in Hokkaido is estimated.
