基于驾驶视觉需求的山区公路平曲线安全评价  

Driving Visual Demand-based Safety Evaluation of Mountainous Highway Horizontal Curve

作　　者：潘晓东[1] 方青[1] 蒋宏[2] 

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]上海市政工程设计研究院,上海200092

出　　处：《同济大学学报（自然科学版）》2010年第12期1763-1766,共4页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金资助项目(50878157);湖南省交通科技进步与创新计划项目(200821)

摘　　要：利用EMR-8B眼动仪,在平曲线半径连续变化的山区道路进行行车实验研究.以视点分布指数、水平视角变化均离系数、驾驶员注视强度等指标对不同平曲线条件下驾驶员的视觉需求进行评价.结果表明,在小半径、小交角组合下路段行车时驾驶员接受到的道路信息量较大,驾驶员的视点及水平视角不能很好地适应线形组合变化,论证了小半径和小交角组合平面线形时平曲线半径应大于125m,道路中心转角应大于120°.By using EMR-8B,a lot of driving experiments were conducted in the mountain roads whose radius is continuously variable.The visual demand of drivers are evaluated by eye fixation distribution index（EFDI）,average deviation of horizontal visual angle（AVEDEV）,eye fixation intensity and other indexes of drivers＇ eye movements.The results indicate that the information that the drivers get from the highway with small horizontal curvature radius and intersection angle is more than that from other horizontal curves,and the level of the driver＇s viewpoint and horizontal visual angle are not well adapted to the requirements of alignment combination variety,and for the curve with small horizontal curvature radius and intersection angle,the radius should be more than 125 m,and the road center corner should be more than 120°.

关 键 词：平曲线 视觉需求 评价指标 注视点 

分 类 号：U412.34[交通运输工程—道路与铁道工程]