公路等级是根据公路的使用任务、功能和流量进行的划分,中国大陆将公路划分为高速公路、一级公路、二级公路、三级公路、四级公路五个等级。
原有道路宽度不合规定者,应一律逐渐拓宽。
The original road shall be widened gradually if its width is inconsistent with regulations.
新模型能同时适用于道路宽度变化和前方车辆速度变化的情形。
The new model is fit for the cases when both the road width and the speed of the leading vehicle are changing about.
一旦到达WMDR,道路宽度很快会变窄为一个3米宽的双向车道泥土路。
Once on the WMDR it quickly narrows to a 3-meter wide dirt road with two-way traffic .
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