Development of a Progression-Based Signal-Timing Strategy for Continuous-Flow Intersections
Publication: Journal of Transportation Engineering, Part A: Systems
Volume 147, Issue 3
Abstract
Because continuous-flow intersections (CFIs) are a relatively new intersection design, there are few existing guidelines for designing signal timings for CFIs. An appropriate signal-timing plan will maximize the capacity of the intersection, reduce congestion, and improve safety. This research developed a new signal-timing strategy for CFIs that is based on traffic progression. This new CFI signal-timing strategy was evaluated by conducting traffic simulation-based experiments, and the results of the evaluation showed that it outperformed the signal-timing plan provided by a commonly used existing signal-timing optimization tool. The proposed signal-timing strategy can reduce average traffic delay by 24%, average vehicle travel time by 8.5%, and average queue length by 28.8% at the studied CFI.
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Data Availability Statement
The following data that support the findings of this study are available from the corresponding author upon reasonable request:
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developed signal-timing plans for different traffic simulation scenarios, and
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outcomes of the traffic simulation-based experiments.
Acknowledgments
This research is supported in part by the United States Department of Transportation (USDOT) under Grant No. 69A3551747133. The contents of this paper reflect the authors’ views, who are responsible for the facts and accuracy of the data presented.
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Information & Authors
Information
Published In
Journal of Transportation Engineering, Part A: Systems
Volume 147 • Issue 3 • March 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Mar 18, 2020
Accepted: Nov 18, 2020
Published online: Jan 7, 2021
Published in print: Mar 1, 2021
Discussion open until: Jun 7, 2021
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