研讨复合型曲线视距横净距的计算，分析“规范”关于视距横净距计算方法的缺陷及局限性，提出通用计算法及其公式。
The paper analyses the drawback of the calculating method of lateral clear distance of the curves with fransitious provided by the specification and provides a common calculation method and formula.
为了满足具有中央分隔带公路弯道外侧超车车道停车视距的需要，保障行车安全，根据汽车在超车车道上的行驶特性，分析了具有中央分隔带公路弯道外侧超车车道上司机视点的位置和横净距。
On the basis of the properties of motorcar running on passing lane, the sight point position and lateral clear distance of curve in passing lane outside the median divider in expressway are analyzed.
为了满足具有中央分隔带公路弯道外侧超车车道停车视距的需要，保障行车安全，根据汽车在超车车道上的行驶特性，分析了具有中央分隔带公路弯道外侧超车车道上司机视点的位置和横净距。
On the basis of the properties of motorcar running on passing lane, the sight point position and lateral clear distance of curve in passing lane outside the median divider in expressway are analyzed.
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