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Appears in Collections:Computing Science and Mathematics Journal Articles
Peer Review Status: Refereed
Title: A Probabilistic Model for Vehicle Scheduling Based on Stochastic Trip Times
Author(s): Shen, Yindong
Xu, Jia
Li, Jingpeng
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Keywords: Vehicle scheduling
Probabilistic model
Stochastic trip time
Delay propagation
Issue Date: Mar-2016
Date Deposited: 3-Jun-2016
Citation: Shen Y, Xu J & Li J (2016) A Probabilistic Model for Vehicle Scheduling Based on Stochastic Trip Times. Transportation Research - Part B - Methodological, 85, pp. 19-31.
Abstract: Vehicle scheduling plays a profound role in public transit planning. Traditional approaches for the Vehicle Scheduling Problem (VSP) are based on a set of predetermined trips in a given timetable. Each trip contains a departure point/time and an arrival point/time whilst the trip time (i.e. the time duration of a trip) is fixed. Based on fixed durations, the resulting schedule is hard to comply with in practice due to the variability of traffic and driving conditions. To enhance the robustness of the schedule to be compiled, the VSP based on stochastic trip times instead of fixed ones is studied. The trip times follow the probability distributions obtained from the data captured by Automatic Vehicle Locating (AVL) systems. A network flow model featuring the stochastic trips is devised to better represent this problem, meanwhile the compatibility of any pair of trips is redefined based on trip time distributions instead of fixed values as traditionally done. A novel probabilistic model of the VSP is proposed with the objectives of minimizing the total cost and maximizing the on-time performance. Experiments show that the probabilistic model may lead to more robust schedules without increasing fleet size.
DOI Link: 10.1016/j.trb.2015.12.016
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