Research On Signal Timing Design And Simulation Of The Intersection Of Reverse Variable Lane

With the rapid increase of car-ownership in recent decades,the phenomenon of urban traffic congestion become more and more serious,the intersection is the key node of urban traffic,and the left turn is the most difficult part of traffic at the intersection.How to deal with the left turn traffic flow is the key to ease the city traffic congestion.In this paper,under the premise of ensuring safety,put the left turn of the vehicle in advance to introduce the opposite of the export channel,and then follow the direction of the left side of the vehicle with the release method to reduce the left turn traffic on the intersection of the impact.First,this paper introduces the background,main contents and technical methods of the research.According to the current situation of urban traffic congestion,the paper introduces diversion island,road widening importing,setting waiting zone and variable lane and so on.Its current stage to ease the positive role of urban traffic congestion.On the basis of the same variable lane,a method of setting up a reverse variable lane is used to borrow the opposite exit lane.The third chapter introduces the definition of the reverse variable lane and compares its similarities and differences with the ordinary plane cross-channeling.Then,the prerequisite for setting up the reverse variable lane is analyzed qualitatively.Then,according to the urban road specification,make sure the length and width of the reverse variable lane and the open and closed time control.In the fourth chapter,the basic concept of signal timing is introduced,and the combination of Webster timing method and dual objective optimal timing method and reverse variable lane is proposed.In the process of time allocation,it is necessary to consider not only the existence of reverse variable lane The impact of the mouth,but also consider the reverse variable lane in a cycle to open and close the time,on the basis of the formation of the intersection of the new channel and timing program.In the fifth chapter,the author analyzes the concrete process of setting up the reverse variable lane and optimization in the actual project.Finally,the simulation software is used to compare the index parameters of the front and rear intersections of the reverse variable lane,to derive the meaning of setting the reverse variable lane to the intersection.In the urban land more and more tense under the premise,compared with other channeling method,set the left turn reverse lane method of construction is simple,low investment costs,it can not use large projects under the premise of full and effective use of existing of the space resources for the city's traffic channel has provided a new direction.