摘要
目前，英国的Webster模型在交叉口的定时信号控制中是应用最为广泛的模型之一。简单介绍交叉口常用的信号控制方法，其次对Webster信号优化模型进行了详细介绍。引进一个拥挤度阈值参数，并在Webster模型的基础上进行改进，提出一种改进的Webster信号配时方法，通过该方法对饱和交通状况下的交叉口进行信号配时，最后通过实验比较改进的方法与Webster方法的有效性。
Abstract
At present, the Webster model is one of the most widely used models in the timing signal control of the intersection. Introduces the signal control method, and then introduces the Webster signal optimization model in details. Introduces a congestion threshold parameter. Then proposes an improved Webster signal timing method on the basis of Webster model. By this method, carries out the signal timing of the intersection of the saturated traffic. Finally, compares the effectiveness of the improved method and the Webster method by experiments.
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