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3.4 断面布置 规划的外环线宽度仅为50.0m,采用机动车专用、4来4去,禁止非机动车通行。事实上,不设置专门辅道系统,主线交通不可能达到全封闭、高速的目的,这已被北京、天津的实践所证明。而设置专门辅通,50m宽度显然是不够的,为此,我们提出了3个基本方案。
3.4 Section Layout The planning of the outer ring width of only 50.0m, the use of motor vehicles, 4 to 4 to prohibit the non-motor vehicles. In fact, without setting up a special auxiliary system, the main traffic can not reach the goal of completely closed and high speed. This has been proved by the practice of Beijing and Tianjin. And set up special auxiliary, 50m width is clearly not enough, therefore, we made three basic programs.