Urban traffic control models are one of the basic tools for the analysis and design of transportation systems.

城市交通控制模型是交通网络系统分析和设计的基础工具之一。

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Several traffic control methods, traffic control strategies, typical traffic models and algorithms are also discussed.

对各种控制方法、控制策略、典型的交通网络模型及算法也进行了讨论。

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Anyone who has flown in or out of those terminals knows that they are hardly models of efficiency, and one reason is the pre-modern U.S. traffic control system.

WSJ: Review & Outlook: Flying the Government Skies