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Transit Deserts: Equity analysis of public transit accessibility
Journal of Transport Geography ( IF 5.899 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.jtrangeo.2020.102869
Javad Jomehpour Chahar Aman , Janille Smith-Colin

Abstract Areas, where disadvantaged and transit-dependent populations are provided with inadequate amounts of transit supply, can be labeled transit deserts. Exploring transit deserts may help transit agencies improve accessibility to services while improving transit distribution and equity. This study utilizes the concepts of transit demand and transit supply to identify transit deserts in the City of Dallas. The comprehensive public transit accessibility (CPTA) score is introduced to evaluate accessibility to transit and to provide a holistic view of transit supply. While previous studies have primarily used proximity or spatial indicators to describe accessibility, this study utilizes a comprehensive set of spatial and temporal measures (connectivity to the network, connectivity to destinations, service frequency, flexibility, and time efficiency) to estimate accessibility to transit. Overlapping areas of high demand (transit dependency) and low supply (as measured using the CPTA) are then characterized as transit deserts. The CPTA score and its application to the analysis of transit deserts provides a universal framework which can be broadly applied by transit agencies, city officials, and transit stakeholders. The contributions of this study are as follows: first, developing a comprehensive framework to estimate transit supply or accessibility; and second, introducing a methodology for identifying transit deserts.

中文翻译:

Transit Deserts:公共交通可达性的公平性分析

摘要 为弱势和依赖过境人口提供过境供应不足的地区,可以标记为过境沙漠。探索过境沙漠可以帮助过境机构提高服务的可及性,同时改善过境分布和公平性。本研究利用公交需求和公交供应的概念来确定达拉斯市的公交沙漠。引入综合公共交通可达性 (CPTA) 分数以评估交通可达性并提供公共交通供应的整体视图。虽然之前的研究主要使用邻近度或空间指标来描述可达性,但本研究利用了一套综合的空间和时间测量指标(与网络的连通性、与目的地的连通性、服务频率、灵活性、和时间效率)来估计交通的可达性。高需求(过境依赖)和低供应(使用 CPTA 衡量)的重叠区域被称为过境沙漠。CPTA 评分及其在交通沙漠分析中的应用提供了一个通用框架,可供交通机构、城市官员和交通利益相关者广泛应用。本研究的贡献如下:首先,制定了一个综合框架来估计交通供应或可达性;第二,引入识别过境沙漠的方法。CPTA 评分及其在交通沙漠分析中的应用提供了一个通用框架,可供交通机构、城市官员和交通利益相关者广泛应用。本研究的贡献如下:首先,制定了一个综合框架来估计交通供应或可达性;其次,引入了一种识别过境沙漠的方法。CPTA 评分及其在交通沙漠分析中的应用提供了一个通用框架,可供交通机构、城市官员和交通利益相关者广泛应用。本研究的贡献如下:首先,制定了一个综合框架来估计交通供应或可达性;其次,引入了一种识别过境沙漠的方法。
更新日期:2020-12-01
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