Abstract Drivers’ visual performance is closely related to traffic safety in a real driving environment. In order to improve the traffic safety of road tunnel lighting, the effect of LED lighting on human visual performance was investigated using reaction time as a parameter. The experiment was performed with a scale model that can simulate a road tunnel lighting environment. Reaction times were measured under different values of luminance, correlated colour temperature (CCT), eccentricity, and contrast. The results show that visual performance can be improved by increasing the CCT of the light sources. The improvement of visual performance is greater in peripheral vision than that in foveal vision. The shortest reaction times were measured at a luminance level of 10 cd/m2 and at a CCT of 5000 K. An appropriate luminance value with high CCT is recommended for tunnel lighting in interior and transition zones.

中文翻译：

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公路隧道照明：光源 CCT 对反应时间的影响

摘要 驾驶员的视觉表现与真实驾驶环境中的交通安全密切相关。为了提高道路隧道照明的交通安全性，以反应时间为参数，研究了LED照明对人体视觉表现的影响。该实验是使用可以模拟公路隧道照明环境的比例模型进行的。在不同的亮度、相关色温 (CCT)、偏心率和对比度值下测量反应时间。结果表明，通过增加光源的 CCT 可以提高视觉性能。周边视觉的视觉性能改善大于中心凹视觉。最短的反应时间是在 10 cd/m2 的亮度水平和 5000 K 的 CCT 下测量的。