Influence of walking accessibility for metro system on pedestrian safety: A multiple membership multilevel model

IF 12.5 1区 工程技术 Q1 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH
Manman Zhu , N.N. Sze , Haojie Li
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引用次数: 0

Abstract

In the past decades, many cities have adopted transit-oriented development approach for urban planning. Studies have explored the effects of built environment, street network and accessibility on the perception and behaviour of pedestrians. However, the relationship between pedestrian safety and walking accessibility is less studied. In this study, influences of land use, socio-demographics, pedestrian network, and transport facilities on pedestrian crash frequencies in the areas around metro stations would be evaluated. Additionally, walking accessibility for individuals with and without physical disabilities would be accounted for. Since data at different spatial scales, i.e., zone level (individual) versus catchment area level (group), are used, the hierarchical approach is adopted for the crash frequency model. Furthermore, some zones are nested within the catchment areas of more than one metro station, the multiple membership approach should be adopted, accounting for the possible correlation. Different from the conventional multiple membership multilevel model, multiple membership weights would be assigned in accordance with the walking distances between zones and stations. Last but not least, temporal instability in the parameter estimation is also explored. Results indicate that pedestrian crash frequencies increase with population density, working population, traffic volume, walking trip, footpath density, node density, barrier-free facilities, bus stop, residential area, commercial area, and government and utility area. In contrast, pedestrian crash frequencies decrease with average gradient and walking accessibility. Findings should shed light on the street design that can enhance walking accessibility and public transport use, without compromising pedestrian safety. Moreover, issues of spatial crash analysis, including hierarchical data structure, and between- and within-group variances, are addressed.

地铁系统的步行可达性对行人安全的影响:多成员多层次模型
在过去几十年里,许多城市在城市规划中都采用了公交导向发展的方法。有研究探讨了建筑环境、街道网络和可达性对行人感知和行为的影响。然而,对行人安全与步行可达性之间关系的研究较少。本研究将评估地铁站周边地区的土地利用、社会人口、步行网络和交通设施对行人碰撞频率的影响。此外,还将考虑肢体残障人士和非肢体残障人士的步行可达性。由于使用了不同空间尺度的数据,即区域层面(个人)和集水区层面(群体)的数据,因此碰撞频率模型采用了分层方法。此外,有些区域嵌套在多个地铁站的集水区内,因此应采用多重成员法,以考虑可能存在的相关性。与传统的多重成员多层次模型不同,多重成员权重将根据区间和站点之间的步行距离进行分配。最后,我们还探讨了参数估计中的时间不稳定性。结果表明,行人碰撞频率随着人口密度、工作人口、交通流量、步行行程、人行道密度、节点密度、无障碍设施、公交站点、住宅区、商业区、政府和公用事业区的增加而增加。相比之下,行人碰撞事故频率则随着平均坡度和步行可达性的增加而降低。研究结果应能启发人们在不影响行人安全的前提下,设计出既能提高步行可达性,又能提高公共交通使用率的街道。此外,研究还涉及空间碰撞分析问题,包括分层数据结构、组间和组内差异等。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
22.10
自引率
34.10%
发文量
35
审稿时长
24 days
期刊介绍: Analytic Methods in Accident Research is a journal that publishes articles related to the development and application of advanced statistical and econometric methods in studying vehicle crashes and other accidents. The journal aims to demonstrate how these innovative approaches can provide new insights into the factors influencing the occurrence and severity of accidents, thereby offering guidance for implementing appropriate preventive measures. While the journal primarily focuses on the analytic approach, it also accepts articles covering various aspects of transportation safety (such as road, pedestrian, air, rail, and water safety), construction safety, and other areas where human behavior, machine failures, or system failures lead to property damage or bodily harm.
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