Sustainable Mass Rail Transit Based On Transit-Oriented Development

Urban transportation is the important base of urban economy and society development, and transportation system determines the mode of city spread and land use. China has realized the significance of urban mass rapid transit, and mass rail transit (MRT) of China has stepped in the period of rapid development. However, for the synthesis and complication of MRT, its building and operation need vast capital, and the investment is difficult to get return. Sustainable MRT has become the inescapable problem confronting with many cities. Fortunately, as a rapid mass transportation mode, MRT has deep influence on society, which has significant orientation effect on urban space and land development. At the same time, it depends on land development highly for the demand of plentiful passengers in reverse. Whereas the necessity and impendency of sustainable MRT and the tight relation between MRT and land use, the research constructed sustainable MRT model of China based on transit-oriented development considering the situation of Chinese city, especially Shenzhen city.On the basis of deep analysis on literature, the research summarizes the status quo, shortcoming and experience, then the sustainable MRT model is defined and framed, which has four aspects objectives, i.e. MRT sustainability on economy, society, environment and future. Whereafter, a two-stage TOD planning model and its optimizing algorithm are designed according to the four objectives. At the first stage, the land use type and density are determined in studied area; And the joint model of traffic split and assignment is constructed considering the characters of Chinese transportation and TOD community for the second stage, which forests traffic demand of TOD community planned in stage one to make sure of its reasonability. For the economic objective of MRT sustainability, i.e. converting external benefit to internal one, the financing mode of MRT is framed, in which the external benefit is quantified, and the mechanism of value capture is built. At last, the internal variables and external environment of MRT system are analyzed synthetically. Based on this, the policy simulation model of MRT system is constructed combining System Dynamics and Cecullar Automata for reasonable policy insuring sustainable MRT.Case study indicates that the sustainable MRT model can solve the problems of land use, financing and policy during MRT building and operation commendably. Therefore, this research takes on a good future.