Synergetic Analysis of Public Transit System and Urban Form

Public transit has integrated relationship with urban form. Transit Oriented Development (TOD) plays a critical role in planning city scale, special structure and city development. Meanwhile, the urban form will affect the operational conditions of public transit as well as its growth in later stage. This paper aims at analyzing the relationship and interactions between public transit system and urban form evolvement. Through some major indexes such as public transit growth, operational profits and urban form expansion, then the principal component analysis is proposed, thus converting a series of linear combination of factors into a few independent factors. The ranking variables are brought in the analysis to indicate the advancement. In order to define the level of comparability of public transit and urban form, the new index was created based on membership function in fuzzy mathematic to quantify how those two factors support each other during the development process. Eventually a real case study was established at Shenzhen city to demonstrate the evaluation process of the proposed method.