Still in the process of trying to get its trick LED Matrix Beam headlights legalized in the US, Audi is now trying to get its front and rear sequential LED turn signals approved by the National Highway Traffic Safety Administration. Just like its auto-dimming headlights, the sequentially illuminating turn signals don't meet NHTSA's Federal Motor Vehicle Safety Standard 108. The problem, according to Automotive News, is that the individual lighting elements are too small to meet current US safety regulations.
Autoblog , Audi pushing DOT to allow its sequential LED turn signals [w/videos]
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, Audi pushing DOT to allow its sequential LED turn signals [w/videos]