Arterial Signal Coordination Optimization Model Based on All-Direction Pairs at Intersections
Publication: Journal of Transportation Engineering, Part A: Systems
Volume 150, Issue 8
Abstract
The current arterial signal coordination models only target through traffic or critical traffic, resulting in fairness issues for traffic in other directions. Moreover, these models fail to achieve system optimality between intersections along the arterial. To address these problems, this paper establishes an arterial signal coordination optimization model based on all-direction pairs of adjacent intersections. The model takes the minimum weighted green wave band center offset of all-direction pairs at the intersections as the objective function. The optimization variables are the cycle length, offset, and phase sequence. The phase sequence structure adopts the ring-and-barrier structure, and the phase sequence optimization includes not only the main road but also the minor road intersecting with it. The model is an integer linear programming model, and it optimizes all-direction pairs of the upstream and downstream intersections. By analyzing the spatiotemporal diagram of the intersections, constraints are established for the phase sequence of the main road and intersecting roads. Through optimization of the offset and phase sequence, the coordination of flow direction pairs between upstream and downstream intersections can be optimized to improve the overall traffic fairness of the arterial.
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Data Availability Statement
All data and models that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
Thanks for the Traffic Management Department of Wujiang District, Suzhou, China for providing the data.
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© 2024 American Society of Civil Engineers.
History
Received: Oct 15, 2023
Accepted: Mar 11, 2024
Published online: May 23, 2024
Published in print: Aug 1, 2024
Discussion open until: Oct 23, 2024
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