本文提出了基于交通效率的城市道路网络的双向优化模型。
This paper puts forward a bi-level optimization model of urban road network based on transport efficiency.
城市道路网络复杂，合理的除雪车辆调度方案仅仅依靠人工经验无法实现。
A reasonable snow emergency vehicle scheduling could not be achieved based on personal experience because of the complexity of urban road network.
在此基础上采集大量道路信息，溶入GIS技术，建立城市道路网络数据库。
Based on the collection of road information, the road network database is constructed by means of GIS technology.
小世界模型为研究城市道路网络的拓扑结构和内在特征等提供了新的视角和方法。
Small world model provides a new aspect and method for exploring the topological structure and intrinsic characters of urban road network.
提出基于城市道路网络容量约束下的交通目标结构优化模型，分析了模型的意义。
According to the city road network capacity restriction, Put forward the optimization model of the traffic target structure, and analyze the meaning of the model.
小世界模型为研究城市道路网络的拓扑结构和内在特征等提供了新的视角和方法。
The objectives of city road network planning and shortcomings of the available programming models were analyzed.
城市平面交叉口是城市道路网络的基本节点，对其实施合理的控制，是解决交叉口问题的关键。
The intersection is the basal node in city, and has important influence on traffic. So whether the intersection is controlled reasonably is the key to figuring out the traffic problems.
已有的均衡分配理论中的阻抗公式不包含车流在交叉口的延误，其研究成果并不真正适用于城市道路网络。
The cost formula in the existing equilibrium theory does not include the delay time at nodes. So, the researching results of the theory are unsuitable for urban road network.
在分析城市道路网络最短路径算法和地理信息系统（GIS）特点的基础上，提出城市紧急事件发生后，应急调度中最佳路径算法。
Based on the analysis of the shortest path algorithm in urban traffic network and the characteristics of GIS, the algorithm of optimal dispatch path when emergency incident occurs is put forward.
在分析城市道路网络最短路径算法和地理信息系统（GIS）特点的基础上，提出城市紧急事件发生后，应急调度中最佳路径算法。
Based on the analysis of the shortest path algorithm in urban traffic network and the characteristics of GIS, the algorithm of optimal dispatch path when emergency incident occurs is put forward.
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