General Research For Servicing Level of Infrastructure

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This Research tried to arrange the actual situation of infrastructures. As a result, we found several important subjects, which are personal houses condition and living environmental equipments is not served well. And from the view point of transportation infrastructure there is not sufficient amount of capacity in metropolitan cities, of highway network and of airports. So, nations have much dissatisfaction about inconsistency between economical development and their living level. We arranged historical background of infrastructure institutions. Then we analyzed mathematical models in infrastructure demand forecasting, especially transportation infrastructures. To put it concretely, we constructed evaluating model for road network and travel demand forecasting model. This model can be applied to another kind of infrastructures. We concluded that economical activity is disturbed by insufficiency of infrastructure.