To enhance driving safety, a counter beam light is proposed to meet CIE (International Commission on Illumination) specifications for tunnel lighting. The proposed new counter beam light (CBL) acts as a qualified counter beam light to help tunnel road lighting meet the CIE 88 : 2004 regulation standard in the threshold zone in both simulation and in practice. Through appropriate arrangements of the counter beam light and conventional fluorescent lights on the tunnel ceiling, we demonstrate that road tunnel lighting meeting CIE 88 : 2004 standards can be accomplished. Based on LiteStar four-dimensional simulation, the source file created through the measurement of the proposed CBL prototype achieved an average road surface brightness of 121 cd/m², which is greater than the minimum regulation level of 105 cd/m², a brightness uniformity of 0.88 (minimum regulation level of 0.4), longitudinal brightness uniformity of 0.98 (minimum regulation level of 0.6), a glare factor of 4.41% (maximum level of 15%), and a contrast revealing coefficient of 1.08, which is above the 0.6 minimum level in the threshold zone.

中文翻译：

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门槛区CIE 88：2004规定的横梁隧道灯设计。

为了提高驾驶安全性，提出了一种反光束灯，以满足隧道照明的CIE（国际照明委员会）规范。拟议中的新反光束灯（CBL）可作为合格的反光束灯，以帮助隧道道路照明在模拟和实践中均在阈值区域达到CIE 88：2004法规标准。通过在隧道天花板上适当布置反光束灯和常规荧光灯，我们证明可以达到CIE 88：2004标准的公路隧道照明。基于LiteStar三维仿真，通过对所提出的CBL原型进行测量而创建的源文件获得的平均路面亮度为121 cd / m ²，大于最小调节水平105 cd / m参照图²，亮度均匀度为0.88（最低调节水平为0.4），纵向亮度均匀度为0.98（最低调节水平为0.6），眩光系数为4.41％（最大水平为15％），对比度显示系数为1.08，高于阈值区域中的0.6最低水平。