Traffic Organization Optimization of Urban Offset Intersection

The offset intersection is a special type of intersection,whose operation status affects the quality of traffic movements in the artery and even in the whole area.Based on the analysis of the normal form and characteristic about the offset intersection,the paper proposed three feasible program of traffic organization for the offset intersection and enhanced the traffic signal control plan of each program.With an example of an offset intersection on Jinshui Road,Zhengzhou City,this paper utilized the simulation software Vissim to evaluate three traffic organization programs and selected the program with minimal intersection delay as the optimal traffic organization of the offset intersection.The results indicate that the traffic must be well organized based on the present road conditions,traffic circumstances and traffic structure in order to ensure the smooth traffic flow in the offset intersection.