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Measuring transit accessibility: A dispersion factor to recognise the spatial distribution of accessible opportunities
Journal of Transport Geography ( IF 5.899 ) Pub Date : 2021-11-19 , DOI: 10.1016/j.jtrangeo.2021.103238
Samal Hama Salih 1 , Jinwoo (Brian) Lee 1
Affiliation  

This study advances the methodology of transit accessibility, particularly the cumulative opportunities by including the spatial distribution of accessible opportunities to assess the performance of transit systems and networks in meeting diverse travel needs. In cities where both population and employment are growing in suburban areas, a process of dispersion occurs distributing employment and other activities to centres outside the city centre. This growth causes significant change and diversification in people's travel patterns and needs. As the role of public transport systems becomes increasingly complex, transit accessibility models must address urban sprawl and the change of urban form from monocentric to polycentric. This study characterises the spatial distribution by the degree of clustering (or dispersion) of accessible opportunities, which is then included in the transit accessibility measure. This new accessibility component could be a meaningful indicator for transit agencies and planners to assess the performance of multi-destination transit networks. The transit accessibility measure incorporates a new transit connectivity index to consider that attractiveness of opportunities deteriorates with decreasing route directness and service frequency and increasing travel time. The proposed measure is applied to the transit network in Brisbane, Australia. The results of the accessibility analysis are compared with and without the dispersion factor to demonstrate its effectiveness.



中文翻译:

衡量交通可达性:识别无障碍机会空间分布的分散因素

本研究通过包括无障碍机会的空间分布来评估交通系统和网络在满足不同旅行需求方面的表现,推进了交通可达性的方法,特别是累积机会。在郊区人口和就业都在增长的城市中,发生了分散过程,将就业和其他活动分配到市中心以外的中心。这种增长导致人们出行方式和需求的显着变化和多样化。随着公共交通系统的作用变得越来越复杂,交通可达性模型必须解决城市扩张和城市形态从单中心到多中心的变化。本研究通过可访问机会的聚集(或分散)程度来表征空间分布,然后将其包含在公共交通可达性度量中。这个新的无障碍组件可能是交通机构和规划者评估多目的地交通网络性能的一个有意义的指标。公交可达性衡量标准结合了新的公交连通性指数,以考虑到机会的吸引力随着路线直接性和服务频率的降低以及旅行时间的增加而降低。拟议的措施适用于澳大利亚布里斯班的公交网络。将可达性分析的结果与分散因子进行比较,以证明其有效性。这个新的无障碍组件可能是交通机构和规划者评估多目的地交通网络性能的一个有意义的指标。公交可达性衡量标准结合了新的公交连通性指数,以考虑到机会的吸引力随着路线直接性和服务频率的降低以及旅行时间的增加而降低。拟议的措施适用于澳大利亚布里斯班的公交网络。将可达性分析的结果与分散因子进行比较,以证明其有效性。这个新的无障碍组件可能是交通机构和规划者评估多目的地交通网络性能的一个有意义的指标。公交可达性衡量标准结合了新的公交连通性指数,以考虑到机会的吸引力随着路线直接性和服务频率的降低以及旅行时间的增加而降低。拟议的措施适用于澳大利亚布里斯班的公交网络。将可达性分析的结果与分散因子进行比较,以证明其有效性。公交可达性衡量标准结合了新的公交连通性指数,以考虑到机会的吸引力随着路线直接性和服务频率的降低以及旅行时间的增加而降低。拟议的措施适用于澳大利亚布里斯班的公交网络。将可达性分析的结果与分散因子进行比较,以证明其有效性。公交可达性衡量标准结合了新的公交连通性指数,以考虑到机会的吸引力随着路线直接性和服务频率的降低以及旅行时间的增加而降低。拟议的措施适用于澳大利亚布里斯班的公交网络。将可达性分析的结果与分散因子进行比较,以证明其有效性。

更新日期:2021-11-19
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