China Reportedly Halts New Approvals for ADAS 'Blue Light' Indicators Over Glare, Cut-In Risks智驾"小蓝灯"被曝叫停：中汽标委会称存在眩光、加塞隐患
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On July 28, online reports claimed China's MIIT had stopped approving new vehicle models equipped with ADAS "blue light" indicators; the next day the China Automotive Standardization Institute (a CATARC-affiliated body) stated the lights cause nighttime glare that impairs other drivers' judgment and make equipped cars more likely to be cut off, noting that GB 4785 (rules for exterior lighting and light-signaling devices on vehicles and trailers) does not include blue as an approved light color.
Automaker responses diverged: Geely told Yicai it was aware of the reports and awaiting further guidance from authorities, while NIO vice president Ma Lin acknowledged some blue lights pose safety risks but said he had not seen an explicit written ban.
The indicator originated as a safety feature rather than a marketing gimmick: after incidents such as Cruise's robotaxi dragging a pedestrian 6 meters in 2024, SAE had proposed a 2019 recommended standard specifying a blue-green (490-500nm) light — chosen by first adopter Mercedes-Benz to avoid conflict with traffic/vehicle lights and to stay visible across the eye's cone-to-rod transition; China's MIIT released draft comments for GB 5920 in 2021 citing 2018 research based on UN Regulation No.148 and SAE J3134, and Li Auto's L9 adopted the light the following year, ahead of the regulation's finalization.