摘要
结合我国九条高速公路连续一年的交通事故数据和车速数据,对速度的离散性与交通事故率的关系进行统计研究。研究表明,事故率与速度的离散性存在着明显的相关性。根据速度与事故率的散点分布,对其进行多种模型拟合,通过方差分析F值的显著性水平,以及判定系数R2的修正、判断,得出事故率与车速标准差的指数分布模型,对高速公路的交通安全具有积极的意义。
It studies the relationship between speed difference and crash rate,using speed and accident data of nine freeway in China. Research shows that the accident rate has obvious correlation with the dispersion of speed. According to the accident rate and speed scatter distribution,several kinds of model are fitted,The significant level of F as well as R^2 are analyzed arriving at the index distribution model of accident rate and speed standard deviation. It is significant to guaranteeing the traffic safety on expressway.
出处
《交通标准化》
2010年第13期70-72,共3页
Communications Standardization
关键词
高速公路
事故率
回归分析
标准差
模型
freeway
accident rate
regression analysis
standard deviation
model
