高速公路隧道出口交通标志安全距离研究  

Traffic Sign's Safe Distance from Freeway Tunnel's Exit

作　　者：杜志刚[1] 潘晓东[2] 郭雪斌[3] 

机构地区：[1]武汉理工大学交通学院,湖北武汉430063 [2]同济大学道路与交通工程教育部重点实验室,上海201804 [3]杭州市城市规划编制中心,浙江杭州310027

出　　处：《公路工程》2008年第1期55-58,共4页Highway Engineering

基　　金：西部交通建设科技基金资助项目(20043182233307)

摘　　要：高速公路隧道出口处亮度的急剧变化,容易诱发视觉障碍,并影响驾驶员对出口处交通标志的准确认知。通过对隧道出口标志视认性分析计算,建立基于视觉震荡持续时间的公路隧道出口交通标志至隧道口安全距离S关系式,在大量高速公路隧道出口行车试验基础上,根据视觉震荡时间分析结果,得出了在隧道内限速为60km/h与80 km/h时的S合理取值。并提出改善隧道出口标志视认性的方法,以供工程技术人员参考。Luminance＇ s sharp variation during freeway tunnel＇s exit easily leads to visual obsta- cles, and drivers can＇ t recognize the traffic sign accurately during highway tunnel＇ s exit. Through analyses and calculation of traffic sign＇ s visible cognition during tunnel＇ s exit, the equation of S （ the distance between sign＇s position and tunnel＇s exit）based on duration time of visual shock has been established, through many driving experiments of freeway tunnel＇ s exit, according to the result of duration time of visual shock, the rational value of S in various conditions that limit speed is 60 km/hor 80 km/h. Some amendatory measures to improve the traffic sign＇ s visible cognition have been brought forward and suggested to generalize.

关 键 词：交通标志 安全距离 隧道出口 行车试验 视觉震荡 

分 类 号：U491.52[交通运输工程—交通运输规划与管理]