Estimation of geographical advantage for network both within and beyond the region

In this paper we think the land price reflects to the geographical advantage. In order to analysis of accessibility, the spatial interaction model is known as a general model because it has been developed by entropy maximization principle for a long history. From observed data about traffic flow, our model can estimate traffic volume among inside and outside of target area by using observed traffic flow data. It can be regarded as a merged concept between the geographical advantage and accessibility of the spatial interaction model in unified way. The parameter estimation procedure for the proposed model is developed.