Abstract
The expansion of the rail transit network has a positive impact on travel characteristics under spatial and temporal constraints by changing accessibility. However, few empirical studies have examined the longitudinal evolution of the impact of accessibility and travel characteristics. In this paper, a model of the Wuhan rail transit network is constructed and the evolution of the spatial pattern of accessibility over different periods is analyzed. The correlation of accessibility with rail transit travel characteristics is studied longitudinally to provide theoretical support for rail transit construction and traffic demand management. The study shows that: (1) Wuhan’s rail transit network has evolved from a tree to a ring, improving the operational efficiency. (2) The accessibility of Wuhan’s rail transit network has evolved into a circular structure, showing a decreasing trend away from the city center. (3) The change of accessibility greatly affects travel characteristics. The higher the accessibility, the higher the traffic volume, and the lower the travel frequency, the more residents travel during peak hours, and the shorter the travel distance. These findings are useful for gaining insight into public transportation demand in large cities, and thus for developing reasonable transportation demand management policies.
Highlights
In the context of rapid urban development, unreasonable travel demand distribution has triggered long-distance detours, traffic congestion, and other problems, which restrict the efficiency of urban operation and seriously affect the quality of life of residents
These findings are useful for gaining insight into public transportation demand in large cities, and for developing reasonable transportation demand management policies
As the most important infrastructure of big cities, the rapid expansion of urban rail transit networks has a deep impact on the overall operational efficiency of cities
Summary
In the context of rapid urban development, unreasonable travel demand distribution has triggered long-distance detours, traffic congestion, and other problems, which restrict the efficiency of urban operation and seriously affect the quality of life of residents. As the most important infrastructure of big cities, the rapid expansion of urban rail transit networks has a deep impact on the overall operational efficiency of cities. In the face of the expanding urban space scale and increasing traffic travel pressure, the construction of an urban spatial structure with a rail transit network as the backbone has become an important measure for big cities to improve their urban operational efficiency [1]. The study of the spatiotemporal evolution of the rail transit network and the characteristics of residents’ travel is beneficial for the screening of public transportation demand in the metropolis, in order to optimize the network deployment and develop reasonable traffic demand management policies to realize the priority development of public transportation
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