Signal Control Optimization Method Based On Road Traffic State Discrimination Research And Application

With the rapid development of China’s economy,a substantial increase in motor vehicle ownership to Lanzhou City,as of August 2017 motor vehicle ownership has more than 950,000,but the city did not increase the road.Most cities in the country and Lanzhou City,similar to the situation,there is a motor vehicle growth and road growth is not proportional to the problem,traffic congestion has become more and more serious,the occurrence of traffic congestion at the same time,resulting in a large number of motor vehicle exhaust emissions,Environmental congestion caused by the traffic congestion from the previous period gradually spread to the peak period,the scope of congestion from the local to the regional expansion,so traffic congestion caused widespread concern at home and abroad scholars to solve the problem of traffic congestion is imminent.In order to solve the problem of urban traffic congestion as the starting point,firstly,the background of the topic selection and the current situation of the research at home and abroad are introduced.In the increasingly serious traffic congestion,the traffic signal control method is studied and optimized through the road traffic condition.Practical value and meaning.Secondly,the traffic flow parameters,traffic flow theory and vehicle detector are briefly introduced.The fuzzy theory is put forward in the road state discrimination,and the factors influencing the road traffic state are determined by the fuzzy analytic hierarchy process(AHP).The road traffic condition comprehensive index The Based on the judgment of road traffic status,the method of signal control optimization is proposed,which is single point optimization control,coordinated optimal control and retrograde variable control.Finally,Lanzhou City,intelligent traffic command center to upgrade the project as the basis,Lanzhou City,Tianshui Road across the board,Nanbin River Road and Pingliang Road intersection,Jinchang Road and Gannan Road intersection three sections,respectively,the implementation of the coordination and control,Point optimization control and reverse variable control,through the above sections,before and after the intersection of the relevant parameters of the comparison,and achieved some results in the signal control optimization of road traffic congestion has been eased to verify the correctness of the signal control optimization method Sex.