Study On Coordinate Control For Arterial Greed Wave Traffic Based On Multi-period Division

In the context of a smart city,As an important part of smart transportation,it carries many expectations.Not only smart transportation is closely related to people’s lives,but also many major cities have become more and more serious traffic congestion,and gradually spread to small and medium-sized cities.In recent years,artificial intelligence,5G,big data,Internet of Things and other technologies have provided new ideas for solving this problem,but the smart traffic using these technologies is not effective,partly because the traffic signal control field has not been able to communicate with China for a long time.The current situation is compatible.This is the rapid growth of China’s comprehensive national strength and economic strength,and the related control theory methods are not up to date.The "bottleneck" problem that urban traffic signal control must break through when solving urban traffic congestion problems is to ensure the smooth and efficient operation of urban trunk lines.Focusing on the stability of traffic operation,this paper proposes the coordinate control for arterial greed wave traffic based on multi-period division.The advantages of multi-time control in cost and stability are favored by many traffic workers,although scholars at home and abroad have been in this field.Relevant research has been carried out,but for multi-period control,multiple applications are used at single intersections,and for coordinate control for arterial greed wave traffic,more attention is paid to delays.Based on this,the coordinate control for arterial greed wave traffic based on multi-period division uses ordered clustering and coordinated control boundaries.Combining the divisions,exploring the method of applying multi-period control to the arterial coordination,extending the ordered clustering from single intersection application to multi-intersection clustering,adapting it to the ordered clustering of multiple control cells,utilizing the degree of relevance divides the entire arterial into several control sub-areas to improve the adaptability of traffic conditions.According to the multi-period partitioning result,the arterial green wave coordinated control optimization model is constructed,and the optimization target of the maximum green wave bandwidth is adopted to increase the benefits of intersecting roads and non-coordinated phase traffic control.The MAXBAND model is improved,and the model is solved by LINGO.The signal scheme switching problem comes from the problem of smooth transition of the arterial coordination scheme to ensure the stability of traffic flow when the signal is switched.For the case where there are many roundabouts in the urban arterial line,the roundabout is transformed into the signal control category,and The green wave coordinated control method of the arterial-integrated roundabout is tentatively proposed.Finally,the method proposed in this paper is verified by the traffic example of Zhongshan Road in Dalian,and the traffic simulation experiment is carried out on the VIS SIM platform.The results show that after the coordinated control of the arterial green wave under the multi-period division,the arterial vehicle delay time and queue The length and the like are significantly reduced,indicating the effectiveness and feasibility of the proposed method.