阐述了高速公路运行中存在的主要问题，分析了可变限速控制在高速公路监控系统中所起到的作用。
The critical problem in highway systems was discussed, and action of the main variable speed-limit control of the surveillance and control system of highway was analyzed.
阐述了高速公路运行中存在的主要问题，分析了可变限速控制在高速公路监控系统中所起到的作用。
The critical problem in highway systems was discussed, and action of the main variable speed-limit control of the surveillance and control system of highway was analyzed.
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