Publication Type
Conference Proceeding Article
Version
publishedVersion
Publication Date
6-2018
Abstract
With rapid population growth and increasing demand for urban mobility, metropolitan areas such as Singapore, Tokyo, and Shanghai are increasingly dependent on public transport systems. Various strategies are proposed to improve the service quality and capacity of bus and subway systems. Express trains-i.e., trains that skip certain stations-are commonly used, because they can travel at higher speeds, potentially reduce travel time, and serve more passengers. In this paper, we study cyclic express subway service (CESS), in which express trains provide routine transport service with cyclic (periodic) station-skip patterns that can be used in daily service. We propose an exact Mixed Integer Programming (MIP) model to optimize cyclic station-skip patterns for express trains operating in a single-track subway system. The objective is to reduce passengers’ total travel time-i.e., the sum of waiting time and riding time- while considering demand intensity and distribution and train headway, frequency, and capacity. We implement the model in a set of numerical experiments using real data from Singapore. We observe that the exact MIP model for CESS provides optimal cyclic express service patterns within a reasonable computational time, and demonstrate that passengers’ average travel time could be significantly reduced compared to local train service. We also discuss the potential transfer of passengers between express trains and evaluate its effects using numerical experiments.
Keywords
Subway, Express service, Station-skip, Single-track, Mixed integer programming
Discipline
Computer Sciences | Operations and Supply Chain Management | Transportation
Research Areas
Intelligent Systems and Optimization
Publication
Proceedings of the 6th International Symposium on Reliability Engineering and Risk Management 6ISREM: Singapore, 2018 May 31 - June 1
First Page
73
Last Page
78
ISBN
9789811127267
Identifier
10.3850/978-981-11-2726-7_CMTA03
Publisher
Research Publishing
City or Country
Singapore
Citation
WANG, Hai; JIN, Jiangang; and YANG, Jingfeng.
Optimization of a cyclic express subway service. (2018). Proceedings of the 6th International Symposium on Reliability Engineering and Risk Management 6ISREM: Singapore, 2018 May 31 - June 1. 73-78.
Available at: https://ink.library.smu.edu.sg/sis_research/4210
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Additional URL
https://doi.org/10.3850/978-981-11-2726-7_CMTA03
Included in
Computer Sciences Commons, Operations and Supply Chain Management Commons, Transportation Commons