期刊
TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES
卷 77, 期 -, 页码 444-461出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.trc.2017.02.013
关键词
E-hailing service; Fixed-route service; Relative spatial position; Continuous approximation; Discrete-event simulation
资金
- National Science Foundation [CMMI-1402911]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1402911] Funding Source: National Science Foundation
This paper analyzes and compares two different relative spatial position (RSP) designs in an integrated e-hailingifixed-route transit system: a zone-based design that operates e-hailing vehicles within a zone, and a line-based design that operates e-hailing vehicles along a fixed-route transit line and with a stable headway. To conduct a meaningful comparison, the optimal design problems for both systems are formulated using a same analytical framework based on the continuous approximation approach. A comprehensive numerical experiment is performed to compare various cost components corresponding to the optimal designs, and a discrete-event simulation model is developed to validate the analysis. The analytical and simulation results agree with each other well, with a discrepancy in the total system cost less than 5% in most test scenarios. These results also suggest that the line-based system consistently outperforms the zone-based system in terms of both agency and user costs, for all scenarios tested. Compared to the zone-based design, the line-based design features a sparser fixed-route network (resulting in larger stop spacing) but a higher dispatching frequency. It is concluded that the higher efficiency of the line-based design is likely derived from the strategy of operating e-hailing vehicles with a more regular route/headway structure and allowing ride-sharing. (C) 2017 Elsevier Ltd. All rights reserved.
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