Factors of Accessibility Metrics and Research Progress

Abstract

Accessibility studies are an important concept in urban transport systems and play an important role in human geography and regional economic studies. Due to the abstract nature of the concept of accessibility, it is easy to have a one-sided understanding and ambiguous knowledge of accessibility. In order to understand accessibility accurately, this paper summarize the concept of accessibility and its influencing factors. In addition, as accessibility research deepens, accessibility measurement methods and application areas are expanding, and this paper classifies different measurement methods and discusses their advantages, disadvantages and applications. The following conclusions are drawn: firstly, according to the needs of the research object and the characteristics of the facilities, the factors influencing accessibility are divided into four types of factors: transport system factors, land resource use, time description and individual characteristics; secondly, according to the purpose and conditions of the research, the broad categories of accessibility research methods can be divided into three types: metrics based on mathematical statistics, metrics based on geometric networks and metrics based on topological networks; thirdly, different Thirdly, different accessibility research methods have different scope of application, and each has its own advantages and disadvantages. In the future, accessibility research can be improved in four directions: spatial-temporal research, adoption of appropriate accessibility methods to avoid model shortcomings, research on topological metrics and construction of a perfect accessibility metric system. In this paper, the concept of spatial accessibility and the accessibility metrics of public service facilities in existing research are reviewed, and the different methods used are compared and analyzed, in the hope of providing assistances in the knowledge and selection of relevant research methods.