Transit Holding Control Model for Real-Time Connection Protection
Publication: Journal of Transportation Engineering, Part A: Systems
Volume 146, Issue 4
Abstract
The time required to transfer between different transit lines is a critical component of passenger travel time. Although transit agencies attempt to design well-coordinated timetables among intersecting lines at the scheduling stage, an operational control method is necessary to maintain the coordinated transfers that may occasionally be disrupted due to unexpected delays of public transit (PT) vehicles. One possible and practical approach is Connection Protection (CP), which involves holding a transit unit in order to wait for another transit unit that is planned to provide a coordinated transfer but has been delayed. This study develops a CP model to apply holding control to a receiving vehicle trip for the purpose of protecting the scheduled connection against delay of a feeder trip. The study incorporates the probabilistic nature of transit operations in formulating the cost function of the model, and accordingly makes more robust decisions for controlling the PT system. The developed model is evaluated by means of a sensitivity analysis. The results show that the model improves transfer efficiency and reduces the waiting times of affected passengers while minimizing delays to other passengers.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
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Published In
Journal of Transportation Engineering, Part A: Systems
Volume 146 • Issue 4 • April 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Feb 21, 2019
Accepted: Sep 23, 2019
Published online: Feb 11, 2020
Published in print: Apr 1, 2020
Discussion open until: Jul 11, 2020
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