基于逆反射系数衰减的隧道路面文字视认效果

为探究高速公路隧道内路面指示文字逆反射系数衰减程度对驾驶人视认效果的影响﹐以认知心理学原理和驾驶人对路面指示文字的视认反应特性为基础，通过室内模拟驾驶试验采集了32名被试的视认数据和车辆运行特征数据，分析了在不同逆反射系数衰减程度下熟悉与不熟悉路况的驾驶人对路面指示文字的视认特性。结果表明：驾驶人的视认次数与路面指示文字的逆反射系数衰减程度呈反比，且熟悉与不熟悉路况的驾驶人的视认次数差值也在相应减少；随着逆反射系数衰减程度增加，驾驶人的视认准确率均有所降低，特别是当逆反射系数衰减程度为40%时，视认准确率下降幅度较大；加速度的波动频率与逆反射系数的衰减程度呈反比，且不熟悉路况驾驶人的加速度波动幅度值较熟悉路况驾驶人的值大。

Research on the effect of road surface indication on driver's visual recognition based on retro reflection coefficient attenuation

In order to explore the influence of the retro reflection coefficient attenuation of road surface indication in expressway tunnel on driver''s visual recognition effect, based on the principles of cognitive psychology and the driver''s visual recognition response characteristics to road surface indicators,32 drivers'' visual recognition data and vehicle operation characteristics data were collected through simulated driving test. This paper analyzed the recognition characteristics of road indication for drivers who are familiar with and unfamiliar with the road condition under different degrees of retro reflection coefficient attenuation. The results show that the number of visual recognition of drivers is inversely proportional to the attenuation of retro reflection coefficient of road surface indication, and the difference between the number of visual recognition of familiar and unfamiliar drivers is also decreasing. With the increase of retro reflection coefficient attenuation, the visual recognition accuracy of drivers decreases, especially when the retro reflection coefficient attenuation is 40%, the visual recognition accuracy decreases significantly. The fluctuation frequency of acceleration is inversely proportional to the attenuation degree of retro reflection coefficient, and the acceleration fluctuation amplitude of drivers unfamiliar with road conditions is larger than that of drivers familiar with road conditions.