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山区公路作为交通事故的多发地段,行车速度和行驶轨迹因素在事故致因中占有相当的比重,公路线形是决定车辆行驶速度的基础。以山区公路车辆运行速度作为主要研究对象,将山区公路弯道路段入弯前车辆减速行为的观测和调查数据作为参考对象,建立山区公路平曲线路段的驾驶员行车速度控制模型,并利用实例对行车减速模型进行了对比验证。计算结果表明,所建减速控制模型可行、有效,能较好地模拟车辆经过限速标志或路面减速标识路段时的减速行为,为山区公路线形设计、行车安全性分析与评价,以及山区公路交通安全改善提供新的理论方法与指导依据。
Mountain road as a traffic accident in multiple locations, driving speed and driving factors in the cause of the accident accounted for a considerable proportion of highway alignment is the basis for determining the speed of vehicles. Taking the running speed of mountain road vehicles as the main research object, taking the observational and survey data of the decelerating behavior of the curved road sections of mountainous areas before entering the bend as the reference object, a driver speed control model of the flat curve section in mountainous areas is established. Traffic deceleration model for comparison and verification. The calculation results show that the built deceleration control model is feasible and effective and can simulate the deceleration behavior of the vehicle passing the speed limit sign or pavement decelerating identification road segment. This model can be used for linear design, driving safety analysis and evaluation of mountainous roads and mountainous highway traffic Provide a new theoretical method and guidance for safety improvement.