Because of the rapid increasement of the population and vehicle in cities, the city-trunk-line-traffic-control should be accomplished as soon as possible.

由于城市人口和车辆的急剧增加，城市干线交通控制已经成为当前迫切需要解决的问题。

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The highway is open to traffic the mileage and wills have the significant increment, the grade has the exaltation, will set up at a high speed the highway is the main National Freeway trunk line net .

公路通车里程将有大幅度的增加，等级有所提高，将建成以高速公路为主的国道干线网。

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Effective city-trunk-line-traffic can greatly reduce environmental pollution and traffic costs.

高效的城市干线交通可以大大降低环境污染以及交通成本。

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