Traffic Organization Optimization Research For The Non-motorized Transport At Intersection

The road intersection is an important node of the traffic flow and traffic intersection,turn,as China's "people-oriented",the development of traffic and put forward the concept of "public bicycles" development,road intersection the traffic composition has changed,the traffic plans are different.Considering the coordination between vehicle and non-motorized,different traffic composition have different signal control operates at the urban road intersection,involving priority assignments of different traffic compositions and traffic benefits.Therefore,it is imminent to solve the urban signalized intersection traffic problems,and scientific and reasonable traffic organization optimization study should be done.Firstly,this paper analyzes the basic characteristics of slow traffic travel from the intersection traffic organization optimization,characteristics and demand characteristics of temporal and spatial distribution,and expounds the factors causing the intersection of slow traffic flow and vehicle traffic conflict,the main problems and the intersection of slow traffic faces,which leads to improve the slow traffic environment through intersection channelization and signal control optimization,reduce the traffic conflict between the traffic flow at the intersection,propose the research ideas to improve the slow traffic traveler safety and time efficiency of intersection channelization and signal timing,lay the foundation for the following research.Secondly,the non-motorized transport number as the inputs and traveler delay,stops and traffic capacity as the optimization objectives,and saturation degree is taken as restrictions.Furthermore,the method can ad-just the weight of performance indexes according to mixed traffic composition.The multi-objective model is solved by genetic algorithm.Secondly,from the two aspects of spatial separation and time separation,aiming at the distribution of traffic conflict,this paper puts forward the optimization scheme of intersection channelization optimization and signal control.The spatial separation,starting from the intersection of slow traffic safety,to focus on the motor vehicle and the slow traffic travelers as the object plane intersection channelization and signal phase design method,and puts forward some measures to improve the intersection channelization design of slow traffic safety,and selects a typical two a bit cross intersection as an example,through the traffic conflict points before and after channelization,illustrate the safety of channelization and signal phase design can improve the intersection.Finally,with the actual intersection as the platform,aiming at the problem of intersection,the comprehensive design of channelization and timing scheme,which is based on the Matlab programming model,using VISSIM simulation to verify the optimization effect.The results show that the multi-objective optimization model is better than the Webster algorithm,and can better adapt to the changes of the mixed traffic flow structure.