基于安全视认的夜间公路隧道入口段光环境研究

为使驾驶员在夜间安全舒适驶入隧道,对驾驶员驾驶车辆从隧道外暗环境驶入隧道内明环境的照明需求进行了理论与试验研究.分析了夜间隧道入口段由暗到明的光环境变化与交通安全的关系.设计不同运行速度情况下的目标物视认试验,采集了隧道的光环境信息、驾驶员的视认信息与车辆的运行状态信息,并建立了视认距离与隧道内外亮度差的关系模型,计算出不同设计速度下夜间隧道入口段的亮度差阈值. 

Research on the Tunnel Entrance Night Light Environment of Highway Tunnel Based on Visual Safety

In order to make the driver enter the tunnel in a safe and comfortable state at night, when the driver entered bright environment from the dark environment. And the relationship was analyzed between the changes in environment from the darkness to brightness and traffic safety, a theoretical and experimental study was done for the lighting demand. A regression model of visual cognition distance and luminance difference was established with the target recognition test at different vehicle speeds. Finally, the luminance difference threshold was got for night tunnel entrance section at different vehicle speeds. The conclusions can provide a reference for the understanding and solving night entrance security issues and energy saving issues.