Abstract: Aming at the design method of left-turn lane in highway intersection, referring to the design guides in developed countries, the deficiencies in the design guide of our country were analyzed. The layout designing, width and length defining and transitional section designing of the left-turn lane were studied in detail. The geometric design method of le ft-turn lane in the highway intersection is suggested.

Key words: grade intersection, left-turn lane, geometric design, transitional section of left-turn lane

摘要： 针对平面交叉口左转车道的设计方法进行研究,参考发达国家平交路口安全设计规范,分析现有的设计技术规范中不合理的因素,从左转车道的布置、车道宽度的确定、车道长度的确定、过渡段的设计等几个方面,进行了详细的分析研究,提出了平面交叉口左转车道的几何设计方法。

关键词: 平面交叉口, 左转车道, 几何设计, 过渡断