根据汽车在超车道上的行驶特性 ,分析了中央分隔带外侧超车道的视点位置及其横净距。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。 According to the driving characteristics of the vehicle in the overtaking lane, the position of the sighting point of the overtaking lane on the outer side of the center dividing line and its horizontal clearance are analyzed. When the line of sight of the overtaking lanes on the outer side of the central divider of the expressway can not meet the requirements of the codes, solutions and measures for solving the problems are put forward for the design of expressways.