出于对安全因素的考虑，公路有宽阔的车道和路肩、中央分隔带、界限、长长的出入口车道、为安全转弯而设计的弯道，以及限定数量的入口。

Built with safety in mind, the highways have wide lanes and shoulders, dividing medians, or barriers, long entry and exit lanes, curves engineered for safe turns, and limited access.

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阻止失控车辆穿越中央分隔带闯入对向车道。

Preventing uncontrolled vehicles from entering the opposite lane through the central divider.

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在高速公路中央分隔带外侧超车道的停车视距不能满足规范要求时，提出了解决问题的方案和措施，供高速公路设计时参考。

When stopping sight distance can't meet the specification's needs in passing lane outside the median divider in expressway, some measures are put forward for reference of expressway design.

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