DEVELOPMENT AND EFFECTIVENESS EVALUATION OF AN ADAPTIVE ALGORITHM FOR PREVENTING TRAFFIC NODE BLOCKAGE
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The article addresses one of the most acute problems of modern cities – intersection blockage caused by queue spillback from adjacent sections of the road network. Such situations lead to the cascading spread of congestion, a significant increase in traffic delays, and economic losses. The study aims to develop a set of measures and an adaptive traffic signal control algorithm to prevent blockages, using a complex transport node in Minsk – the intersection of Pritytskogo Street and Pushkina Avenue – as a case study. The problem at this node is identified as the regular occurrence of "stop-waves" that propagate from one intersection to another, making it impossible to clear the intersection during the green signal time. A comprehensive approach is proposed, which includes modifying the coordination plan for adjacent intersections, introducing a special additional phase to «flush» the blocked intersection, and developing an algorithm for its adaptive activation. The algorithm is based on data from physical vehicle detectors installed at a certain distance from the intersection for early detection of the «stop-wave». The simulation results showed that the implementation of adaptive control reduces total and specific traffic delays by 30%.
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References
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