【摘要】 公路隧道入口段照明设计对交通安全至关重要，科学的照明设计可通过亮度渐变引导视觉适应，有效减少事故发生。本文旨在探讨公路隧道入口段色温突变对驾驶员视觉适应的影响，通过对不同时间、不同天气隧道入口段光源色温的变化的研究，结合驾驶员的视觉适应机制进行综述，分析色温突变对驾驶员造成的视觉适应问题。研究结果表明：色温突变会显著影响驾驶员的视距判断、生理及心理变化，增加交通事故风险，降低通行效率。白天隧道入口段建议采用4 000～4 800 K色温的LED光源照明，夜间晴朗天气下色温建议<5 000 K，雾天则需根据雾浓度调整色温值。同时，提出通过设计渐变式过渡照明系统以减少视觉不适，提高驾驶员适应能力和行驶稳定性，为隧道照明设计提供了理论依据与优化建议。更多还原

【Abstract】 The lighting design at the entrance section of highway tunnels is crucial for traffic safety. A scientific lighting design can guide visual adaptation through gradual brightness changes, effectively reducing the occurrence of accidents. The purpose of this paper is to explore the influence of color temperature mutation at the entrance of highway tunnel on driver’s visual adaptation. Through the changes of the color temperature of the light source at the entrance section of the tunnel at different times and different weathers, combined with the research on the influence of the driver’s visual adaptation, the visual adaptation problem caused by the sudden change of the color temperature to the driver is analyzed. The results show that the color temperature mutation will significantly affect the driver’s sight distance judgment, physiological and psychological changes, increase the risk of traffic accidents, and reduce the traffic efficiency. During the day, the LED light source with color temperature of 4 000 K～4 800 K is recommended for the entrance section of the tunnel. The color temperature is recommended to be lower than 5 000 K in sunny weather at night, and the color temperature should be adjusted according to the fog concentration in foggy days. At the same time, it is proposed to reduce the visual discomfort and improve the driver’s adaptability and driving stability by designing a gradient transition lighting system, which provides a theoretical basis and optimization suggestions for tunnel lighting design.更多还原