中文摘要：

针对道路交叉口在交通流处于过饱和状态，存在排队车辆且排队车辆的随机性明显减弱这一特征，建立该种状态下的交通流数学模型，利用最优控制理论来实现道路交叉口信号的优化配时。

英文摘要：

In the traffic flow at intersections existing hyper saturated state line, line and the randomness of the vehicle traffic abate obviously this feature, establish the condition of traffic flow mathematic model, using the optimal control theory and its algorithm is proposed to realize the optimum signal road intersections.