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选取山区高速公路3类代表性的振动减速标线进行了实地交通流检测。对不同检测断面的速度、交通流量等进行了统计分析;对各检测断面小车、大车速度分布的正态性进行了验证,研究了车辆通过3类振动减速标线的速度变化特征;利用回归分析方法,分别建立了高速公路振动减速标线路段小车、大车的运行速度变化规律模型,并针对模型所反映出的车辆在高速公路振动减速标线路段运行速度呈现先减速、后加速的变化特点,提出设置振动减速标线提醒标志、延长振动减速标线长度及组间距等安全管理建议。结果表明:模型与实测数据吻合较好。
Three representative types of vibration deceleration marking on mountain highway were selected for on-the-spot traffic flow detection. The velocity and traffic flow of different sections were statistically analyzed. The normality of the velocity distribution of the car and trolley in each section was verified. The velocity characteristics of the vehicle passing through the three kinds of vibration deceleration marking were studied. The model of the change rule of the running speed of the car and trolley in the track section of the highway vibration deceleration was set up respectively. According to the model, the change of the speed of the vehicle in the line section of the vibration and deceleration of expressway decelerated first and then accelerated Characteristics, proposed to set the mark of vibration deceleration marking, to extend the vibration deceleration marking length and group spacing and other safety management recommendations. The results show that the model is in good agreement with the measured data.