Study On Traffic Organization Design Of Urban Close Quarter Intersection

Urban road has some special and complex close intersection,the intersection spacing is shorter,often is the blocking point of the road traffic,traffic accident frequency point,it is also the difficult point in urban road reconstruction.Due to the close intersection spacing is too short,make the design of interchange of traffic flow interweave length can't meet the requirements of vehicle,and to build the overpass intersection,such as transformation needs to spend a lot of manpower,financial resources,and the requirement of road space is large,generally difficult to implement;Relative to character,based on the research of the traffic characteristics and space-time resource optimization to improve the operation condition of the near distance intersection is more feasible and practical measures.In view of this,in this paper,the recent distance intersection traffic optimization design are studied,the main work and achievements are as follows:(1)Through the adjacent intersections between the length of the acceleration section,interweave and slow down,close definition of intersection method is given,and put forward the close range value of the intersection length.Close intersection traffic conflict analysis of distribution and traffic characteristics,indicates that the factors affecting capacity,and analyze the dislocation intersections,close combination of two cross intersection,close combination of t-shaped and cross-shaped intersection traffic capacity theory model.(2)For 3 kinds of theoretical models,the paper puts forward a one-way traffic organization such as traffic,green wave linkage optimization methods and steps.(3)Respectively,from the space and time study on close intersection traffic organization.Banks is used to design space,through the import lanes and exit lanes,weaving section to coordinate the three aspects of pointed out the close intersection highly channelizing design design basis and method;Time is through the two aspects of phase and phase sequence signal design.(4)To Jiangmen based on a close intersection road,through investigating the background of the project,the traffic situation,analysis and evaluation of the status quo,put forward to optimize the design scheme of using the Vissim simulation software to simulate and evaluate.Finally,on the basis of summarizing the full text,and suggest further research on this subject area.