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对主要影响车速的不同自然因素进行分析 ,引入障碍值概念 ,揭示障碍值与不同类型车辆时速间的关系 ,为公路交通工程提供借鉴。
This paper analyzes the different natural factors which mainly affect the vehicle speed, introduces the concept of obstacle value, reveals the relationship between the obstacle value and different types of vehicle speed, and provides reference for highway traffic engineering.