Study On Traffic Signal Control For Isolated Intersection

Generally the traffic problem in the urban road network can be assumed as the conflict between traffic demand and responsive. Those kinds of conflict used to cause the traffic congestion directly,especially at the intersections. Therefore,the most insistent and practical research subject is aimed to improve the traffic operation quality for solving the traffic problem at the intersections in whole urban road network by means of adapting the efficient traffic management measures,reducing the traffic conflict,increasing the traffic capacity and improving the traffic safety and so on.By enclosing the traffic signal control technique and analyzing the characteristic of traffic movement with subjecting the traffic conflicts in the intersection,this article has introduced a principle for traffic signal control design. Based on studying and exploring the disadvantage of multi-plan fixed time control and vehicle actuated control modes,a more efficient traffic control mode - Multi Parameters Logical Algorithm Mode has been put forward together with building up the optimized model and arithmetic for isolated intersections. The control program,in order to promote the studying achievement productively,has been developed from the theory of above. Meanwhile,through the layered analyzing,a simple and effective Traffic Control Evaluation Index System has been setup and the conclusion has been finally obtained from the comparison among of three different signal control modes with the onsite experiment at the intersection.The research result descried in this article can be figured as a reasonable and effective method for traffic signal control at the isolated intersections. It is significantly valuable in practice and has been proved by the onsite test in Chong Qing.