为了量化评价道路平、纵线形组合路段的驾驶人错视觉，以提高平、纵组合路段驾驶安全水平，提出了用车辆行驶轨迹指标来评价驾驶人错视觉的方法。选择正交试验方法设计道路实验参数，应用仿真软件 UC－win／road 建立了道路几何参数与驾驶人错视觉之间的仿真模型；利用驾驶仿真模拟完成仿真实验，并进行实验数据的采集与分析；研究了视距、半径、纵坡坡度、缓和曲线长度和转角角度对驾驶人错视觉的影响，并建立了回归方程。从正交试验的极差分析可以看出，道路几何参数与驾驶人的错视觉之间存在较强的相关性，选择合理的道路几何参数对组合路段错视觉的削弱幅度可达10％～50％。对西部某山区高速公路的平、纵组合路段道路几何参数进行评价。分析表明，最容易让驾驶人产生错视觉的路段为不设超高的平曲线路段，从总体来看，凸曲线路段较凹曲线路段更容易让驾驶人产生错视觉。%In order to quantify the drivers’misperception and improve the safety level on horizontal road combined with vertical curves,this paper use the index of vehicles’wheel path to evaluate the drivers’misperception.Using the orthogonal experimen-tal design to choose the road test parameters,this paper also uses the simulation software UC-win/road to build simulation mod-els based on the road geometric elements and the drivers’misperception.The driving simulation data was collected and analyzed. The effects of sight distance,radius,longitudinalslope,spirals and road angle on the drivers’misperception were studied and re-gression models were built.From the range analysis of the orthogonal experiments,it can be seen the road geometric elements and the drivers’misperception are closely related.Choosing the suggested value given by this study could decrease maximum of the drivers’misperception by 10%-50%.This paper also evaluated the road geometric elements of some highway horizontal and vertical combination sections in western mountainous area.The analysis shows that the most likely cause to the drivers’misper-ception are the roads without super flat curves.Overall,curves combined with crest curves are more likely to cause the drivers’ misperception than curves combined with sag curves.
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