Journal
JOURNAL OF TRANSPORTATION ENGINEERING PART A-SYSTEMS
Volume 147, Issue 3, Pages -Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/JTEPBS.0000508
Keywords
Continuous-flow intersection (CFI); Signal timing; Traffic progression; Microscopic simulation
Funding
- United States Department of Transportation (USDOT) [69A3551747133]
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A new signal-timing strategy based on traffic progression was developed for Continuous-Flow Intersections (CFIs), which was proven through traffic simulation-based experiments to outperform existing signal-timing optimization tools in reducing traffic delay, vehicle travel time, and queue length.
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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