为寻求高效的路网交通协调控制方法，在宏观传输模型的框架下，通过交叉口网格化来分析交叉口处的交通流行为，构建用于方案快速评估的宏观仿真模型．然后以最优化交通运行为目标，建立路网交通协调控制的双层规划模型．将宏观仿真模型和双层规划模型相结合，共同构成了基于改进宏观交通模型的交通协调控制方法．最后以虚拟路网协调控制为例，针对3 种不同交通需求，将文中方法与Transyt-7F 优化方法进行对比，结果表明，文中方法是有效的，尤其是在高需求交通状态下，该方法优于Transyt-7F 方法．

In order to seek an effective method of traffic coordination control for road networks,the traffic behaviorsat intersections are analyzed based on the macroscopic transmission model via a gridding procedure,and a newmacroscopic simulation model is constructed to fast evaluate control schemes.Then,by taking the optimal trafficrunning as the objective,a bi-level programming model for traffic coordination control is proposed.Moreover,bycombining the macroscopic simulation model with the proposed bi-level model,a method of traffic coordination controlbased on the improved macroscopic traffic model is presented.The method is finally tested on a virtual networkwith three different traffic demands,and the results are compared with those of the Transyt-7F method.It is foundthat the proposed method is feasible and is superior to the Transyt-7F method especially in the high demand scenario.