Coordinated transit signal priority control with queue length prediction in V2X environments
Document Type
Journal Article
Publication Date
2026
Subject Area
mode - tram/light rail, infrastructure - bus/tram priority, infrastructure - traffic signals, operations - traffic, operations - coordination
Keywords
Transit signal priority, signal coordination, V2X, queue length prediction, dynamic programming
Abstract
Transit Signal Priority (TSP) is a control strategy that can reduce the delay of transit systems. However, upon a high traffic volume, TSP may significantly increase delays for non-prioritized vehicles. Furthermore, designing TSP without considering signal coordination may result in ineffective progression for transit vehicles. In recent years, V2X (Vehicle-to-Everything) communications have been built and tested to collect vehicles’ locations and speeds. This study seeks to develop a coordinated TSP control logic in a V2X environment, where additional delays caused by TSP control are calculated with queue length prediction. By adopting a dynamic programming algorithm, the waiting time of transit vehicles and overall delays along the transit route are accounted for to determine the optimal TSP action. The simulated experiment based on a Light Rail Transit (LRT) system shows that the V2X coordinated TSP effectively mitigates the negative impact on general vehicles in non-priority directions upon heavy traffic flows.
Rights
Permission to publish the abstract has been given by Taylor&Francis, copyright remains with them.
Recommended Citation
Huang, H. K., & Hsu, Y. T. (2026). Coordinated transit signal priority control with queue length prediction in V2X environments. Transportation Letters, 18(2), 392-413.
