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Experts introduced that the project's intelligent stepless dimming control, energy storage luminescent paint and color-changing temperament 3 new technologies and new products will create an environment close to natural light in the tunnel, allowing the driver to have physiological vision in the tunnel. Psychological feelings are not significantly different from those in the open air.
With the substantial increase in expressway mileage in Guizhou Province, the number of highway tunnels in the province has reached more than 800, and the length of the tunnel is nearly 800 kilometers. At the same time, the number of long tunnels has also increased. For example, the longest tunnel in the Guizhou section of the Xiamen-Chengdu Expressway is 4,752 meters in length, and the length of the water tunnel is 36% of the total length of the line. The tunnel lighting costs and maintenance costs are high, and the contradiction between lighting energy saving and lighting safety becomes more and more prominent. The transportation department of Guizhou Province has investigated the overall lighting conditions of more than 10 expressway tunnels such as Hukun and Hangrui. 41% of the drivers think that the tunnel lighting conditions in Guizhou Province are generally dark, and the tunnel entrance and exit section is the most dangerous location of the tunnel. The driver accounts for 78%.
At present, the research results of the project have been used in the Guiyang Tunnel of Sijian Expressway. The stepless dimming control system can be adopted according to different weather, different time periods and different running speeds such as sunny, cloudy, rainy or foggy days. Adjusting the color temperature of the lamp, giving each tunnel segment different brightness, while the tunnel wall energy storage luminescent paint can be illuminated for more than 12 hours in the dark after being exposed to visible light for a period of time. The experiment found that the paint can even meet the needs of reading newspapers. It is reported that Sanli Expressway, which will be completed and opened to traffic, will adopt these three new technologies.
Statistics show that the highway tunnel lighting electricity fee managed by Guizhou Expressway Group is about 50 million yuan per year. If the project results are fully promoted, it will save operating electricity costs of 30.8 million yuan per year, energy saving 61.6%, and reduce tunnel lighting energy consumption by 32.42 million per year. Degree, reducing carbon dioxide emissions by 34,500 tons. 
Recently, the “Lightway Environment and Application Technology Research of Mountain Expressway Tunnel†led by Guizhou Expressway Group Co., Ltd. passed the expert review. The results of the project will solve the "black hole effect" and solve the traffic problems caused by sudden changes in light and dark inside and outside the expressway tunnel, making highway traffic safer.