Research On Priority Coordinated Control Method Of Modern Tram

As a new type of public transport,modern trams play a leading role in urban public transportation.Modern trams are independent road rights when driving on roads,sharing road rights with social vehicles at plane intersection,and have two-layer properties of rail traffic and road traffic.In the main urban roads intervened by modern trams,the signal priority control of modern trams will have a greater impact on the original signal scheme and green wave coordination scheme of the level crossing.In order to balance the common benefits of the two,under the existing coordinated control of the main line,the signal of the modern tram will be prioritized,so that the modern tram can be better integrated into the road traffic system,and the entire trunk system runs efficiently and safely.This article mainly did the following work:1.Firstly,the basic characteristics of the vehicle are summarized;Analyze the conflict analysis of different line switching modes in the intersection and the impact on the original intersection phase and signal control scheme;Based on the theory of signal priority,by analyzing the different moments when modern trams reach the downstream intersection,priority control schemes with different priority levels are set.2.Taking the main road system as the research object,based on the priority control of a single intersection,a delay calculation model for a single-row tram is proposed.The priority coordinated control scheme is constructed based on the collected social vehicle traffic information,and the control target is the trunk.The per capita delay in the system is the minimum target.3.Comparative analysis of the differences in the driving characteristics of modern trams and social vehicles in the coordinated control of trunk lines.Combining the principle of arterial coordination control with speed induction,a modern tram speed guidance method is proposed.Considering the discreteness of the upstream fleet running time,balancing the traffic efficiency between the priority intersection and the trunk intersection group,constructing the intersection optimization time-optimized two-layer planning model under the vehicle road coordination,and realizing the tram under the optimal overall traffic efficiency Signal priority.4.Finally,relying on the tramway line running in the main road of a city,investigate the traffic data information and the intersection geometry,and use VISSIM to simulate the scene to verify the validity of the model.