具有中央分隔带公路弯道外侧超车车道的视距

Passing lane stopping sight distance outside of median divider in freeway

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。计算结果表明在极限最小半径和一般最小半径下,中央分隔带外侧超车车道的停车视距小于规范规定值,并提出了解决方案和措施,供公路设计时参考。

For the needs of stopping sight distance in curve outside of median divider in freeway, ensuring the driving safety, based on the properties of motorcar running on passing lane, this paper analyzed the sight point position and lateral clear distance of curve in passing lane outside of median divider in freeway. Indicating in the condition of limit least radius and common least radius, the stopping sight distance can’t meet the specification’s needs in passing lane outside of median divider in freeway, and some measures were put forward for the reference of freeway design.