Optimal Location of Submain Tracks on an Urban Railway Line
Publication: Journal of Transportation Engineering, Part A: Systems
Volume 146, Issue 9
Abstract
Determining the location of submain tracks (SMTs) or sidings to accommodate flexible operation is a critical issue in supporting construction investments and meeting passenger preferences. This project considered the problem of calculating the optimal location of SMTs. The objective was to minimize the sum of the construction costs for the SMTs and the total delay cost for passengers. We introduced properties for two train types. Additionally, we developed a mixed-integer model for multiple train types. We propose a procedure for using our model to determine the locations of SMTs for various headways and traffic mixes, and conducted numerical experiments to verify its performance. The results confirmed that our procedure is practical for an urban railway because the average total delay does not increase by more than about 55% compared with the optimal solution for any operational scheme.
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Data Availability Statement
Some or all data, models, or code that support the findings of this project are available from the corresponding author upon reasonable request.
Acknowledgments
This research was supported in part by the Basic Science Research Program (2019R1G1A1085191) through the National Research Foundation of Korea (NRF), and by the R&D Program of the Korea Railroad Research Institute.
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© 2020 American Society of Civil Engineers.
History
Received: Jan 21, 2020
Accepted: May 14, 2020
Published online: Jul 9, 2020
Published in print: Sep 1, 2020
Discussion open until: Dec 9, 2020
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