Evaluation and classification of TOD performance for Wuhan rail transit:Empirical application of the"Node-Place-Function"model
By comprehensively evaluating and classifying the performance of Transit Oriented Development(TOD)within different metro station areas,the metropolis can accurately formulate development strategies that encourage positive interaction between transportation and land use to alleviate urban diseases.Traditional two-dimensional(2D)indicators overlook the typical three-dimensional(3D)characteristics of cities'development,and their density or intensity indicators also ignore the potential functional combinations among POI types.Therefore,this study introduced new indicators such as the 3D form of streets/buildings and POI functional semantics to reconstruct the"Node-Place-Function"framework,measured the TOD performance of 188 station areas in Wuhan and divided them into 6 categories using KMeans,then explored the relationship between TOD performance/typology and the key external efficiency of metro passenger flow.The main conclusions are as follows:(1)The TOD performance was decreasing from riverside areas of Jianghan and Wuchang to city periphery,whose high values are distributed as large and small clusters.(2)The TOD types follow a similar layer distribution,which could be named sequentially from city center to outside(Ⅰ-Ⅵ)as:High value Function advantage class,High value Node advantage class,Median value balance class,Median value Place advantage class,Low value Node advantage class and Low value Node disadvantage class.(3)Positive correlations were observed between TOD efficiency and passenger flow boarding and alighting both on weekdays and weekends.A large number of passengers converged from Class Ⅲ-Ⅵ stations to Class Ⅰ & Ⅱ stations during morning peak periods.The expanded quantitative evaluation system in this study can effectively infer potential passenger volume,and the TOD typologies also help planners tailor their policies to local conditions and make targeted decisions.
transit-oriented developmentmetro station areaNode-Place-Functiontypologymetro passenger flow
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