Measurement of Space-time Accessibility to Service Facilities Considering Travel Time Uncertainty

被引：0
作者：
Fu X. [1 ]
Li M.-Y. [1 ]
Lu X. [1 ]
Cai X.-H. [1 ]
机构：
[1] School of Transportation, Southeast University, Nanjing
来源：
Jiaotong Yunshu Xitong Gongcheng Yu Xinxi/Journal of Transportation Systems Engineering and Information Technology | 2019年 / 19卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Measurement of space-time accessibility; Multi-modal transport network; Travel time uncertainty; Urban traffic; Xuanwu District of Nanjing;
D O I：
10.16097/j.cnki.1009-6744.2019.02.013
中图分类号：
学科分类号：
摘要：
In congested multi-modal transport network in China, the uncertainty of individuals' travel time is significant. The travel time uncertainty significantly affects individuals' travel choice behavior. To conduct some important activities such as seeking medical service, individuals normally have high expectations of travel time reliability. This paper takes the space-time accessibility of general hospitals in Xuanwu District of Nanjing as an example. The space-time accessibility of service facilities in multi-modal transport networks is intensively explored by extending the gravity model and the travel time budget model. A new method is proposed for measuring the space-time accessibility with consideration of travel time uncertainty. Individuals' risk decision-making behavior is analyzed regarding different transport modes. The results provide effective bases and evaluation indicators for urban multi-modal transport development and land use planning. The results show that using different transport modes, there are significant differences among the space-time accessibilities to service facilities under various travel time reliability constraints. Copyright © 2019 by Science Press.
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页码：86 / 93
页数：7
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