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The anti-glare LED tunnel lights employing third-generation optical light distribution technology have passed the mandatory certification in accordance with the 《Safety Specifications for Highway Tunnel Lighting Facilities》. The new standard introduces 12 additional testing indicators, including glare index (UGR), flicker suppression, and emergency lighting response, marking China's entry into the era of refined light environment control for tunnel lighting.
Core Technological Breakthroughs
Optical System Innovation: Achieves directional light distribution through asymmetric lens arrays, effectively controlling horizontal stray light.
Intelligent Dimming System: Automatically adjusts color temperature and illuminance based on traffic flow and time of day, maintaining constant visual comfort.
Material and Process Upgrades: Nanocoating technology reduces the glare reflection rate on the lamp surface.
Safety Redundancy Design: Dual circuit backup ensures continuous lighting in extreme environments, with a shortened response time for the fault warning system.
Social Benefits and Industry Impact
This technology brings about significant improvements in three areas:
l Traffic Safety: Reduces visual blind spots caused by glare for drivers, potentially lowering tunnel accident rates.
l Energy Saving and Environmental Protection: Enhances energy efficiency compared to traditional lamps, reducing lifecycle carbon emissions.
l Maintenance Management: The remote monitoring platform enables single-lamp fault localization, lowering maintenance costs.
Currently, seven provincial transportation departments have included this certified product in their recommended directories for infrastructure renovation. The China Illuminating Engineering Society is leading the formulation of a supporting 《Guide for Tunnel Light Environment Evaluation》, and a complete intellectual property protection system has been established for related technological patents. With the advancement of smart transportation construction, next-generation products will integrate vehicle-road coordination systems, enabling dynamic lighting strategies based on real-time traffic data. The International Tunneling Association (ITA) has included this technical standard in its 2026 international standard conversion plan, showcasing China's innovative contributions in the field of road safety.