ABSTRACT The intersection is the “bottleneck” of the road network’s traffic capacity and the “Multi-happening” of traffic accident. So, we hand to solve the crowed phenomenon of traffic and reduce the waiting time of vehicle. However, the key to solve these problems is that we should increase the efficiency of traffic lights’ cycle, in other words, finding the optimal number of traffic lights’ phase. Furthermore, designing the signal phase is the first step to design the traffic lights, which influence the safety of the intersection’s traffic operation and the capacity of the intersection’s access that can provide. Generally, at intersections, people would set red and green traffic signal to keep the usual traffic order. However, on the multiple intersections, it needs several traffic signals that can make vehicles don’t collide each other. In this paper, we analyze the geometric features of multiple intersections, then we apply the graph theory and the backtrack algorithm coloring. By quoting the concept of “vertex coloring”, finally we change the design of multiple intersections’ signal phase program to the problem of vertex o coloring. Keywords:Multiple intersections, Graph theory, Backtrack algorithm coloring,signal phase program ........
以上为本篇毕业论文范文 交通路口信号灯设计的介绍部分。