河南理工大学学报（自然科学版）2025，Vol.44Issue(5)：62-71,10.DOI:10.16186/j.cnki.1673-9787.2024070071
基于元胞自动机模拟的城市干线交通协调控制研究
Study on coordinated control of urban trunk traffic based on cellular automata simulation
摘要
Abstract
Objectives To explore the impact of the coordinated control scheme for continuous intersections in the urban trunk traffic system on cyclic traffic congestion and avoid the interference of unreasonable traf-fic control on travel,Conduct research on coordinated control of urban arterial traffic based on cellular au-tomaton simulation.Methods the trunk traffic system of three continuous intersections was taken as the re-search scenario.The traffic flow cellular automaton NaSch model was applied,and open boundary condi-tions were adopted.The traffic operations under different traffic control parameters were simulated,and the effects of the vehicle-entering probability at the traffic system entrance,the signal cycle lengths,green-light ratios,green-time differences of each intersection,and the lengths of each road section on the traffic states of the three continuous road sections were analyzed.Results The results showed that,in the trunk traffic system of three continuous intersections,an increase in the vehicle-entering probability had a more significant impact on the upstream road section.When it was controlled below 0.6,the number of stagnant vehicles and the probability of traffic jams were reduced.A shorter signal cycle length at the upstream inter-section relieved the traffic pressure on the downstream road section,while the downstream had little influ-ence on the upstream.An excessively large green-light ratio at the upstream intersection affected the traffic state of the adjacent downstream road section.A signal cycle of 90 s and a green-light ratio of 0.6 were found to be more suitable;when the green-light ratio was lower than 0.5,the probability of vehicles stop-ping and waiting at the intersection increased significantly.The green-time difference at the upstream inter-section appropriately alleviated the congestion at the downstream intersection.An increase in the length of the road section led to an increase in the number of queuing vehicles on this section,but had little impact on other road sections.Conclusions In the urban trunk traffic system of three continuous intersections,by reducing the vehicle-entering probability and reasonably regulating parameters such as the signal cycle lengths,green-light ratios,and green-time differences,traffic queuing at intersections was reduced,and congestion was alleviated.This study provided a reference for urban trunk traffic design and signal timing optimization of continuous intersections.关键词
城市干线交通/连续路口/协调控制/元胞自动机/交通模拟Key words
urban trunk traffic/consecutive intersections/coordinated control/cellular automata/traffic simulation分类
信息技术与安全科学引用本文复制引用
吴志强,范智博,郭警醒,张希帆,王艳红..基于元胞自动机模拟的城市干线交通协调控制研究[J].河南理工大学学报（自然科学版）,2025,44(5):62-71,10.基金项目
国家自然科学基金资助项目(71601073) （71601073）
河南省自然科学基金资助项目(232300420075,242300420029,252300420042) （232300420075,242300420029,252300420042）
国家级大学生创新创业训练计划项目(202110460031) （202110460031）
