摘要
为了研究高等级公路不同限速方案对车辆速度的影响,应用正态分布函数拟合车辆速度的概率密度曲线,分别研究在不同限速方案下大小车速度的分布特性,得出限速值对大车有一定的限速效果,而很大比例的小车不遵速限速值,大、小车85%位速度差与限速差为正向线性关系,因此要合理设置道路的限速值.
Abstract： For analyzing the impact of large truck-automobile speed limits differential on vehicle speed of highway, the method of normal distribution function combined with density curve is selected to research the distributional characteristics of vehicle speed under speed limits differential. The conclusion is that speed limit has certain effect on heavy vehicle and little effect on automobile. The 85th speed difference is linear with speed limit difference, therefore speed limit of highway should be set appropriately.
出处
《武汉理工大学学报（交通科学与工程版）》
2013年第6期1338-1341,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
交通运输部西部交通建设科技项目资助(批准号:200731800027)
关键词
统一限速
分车型限速
限速差
85%位速度差
differential speed limit
uniform speed limit
speed limit difference
85th percentile speed difference
