Brake Light Problems of Audi S6

I was driving behind an Audi S6 (one of the newer models with full led lighting) at night. I found its led brake lights blindingly bright. The driving lights are very bright by themselves, but they're borderline tolerable, however brake lights when they come on are extremely bright - I could not look at that car when driving behind it, it was too painful to look at. I had to take my eyes off that car and off the road ahead of me as a result of this for extended periods of time. I could not have those taillights within my field of vision, they hurt even when I tried to look away from that Audi. I do not feel safe driving behind new Audis and other cars that use extremely bright led taillights. I could have crashed because when I was slowing down behind that Audi that lit up its taillights when braking I could not look ahead on the road and at the car. I had to brake blindly while briefly looking up for a millisecond or two (and suffering eye pain) now and then to ensure I wasn't going to crash into it. I was not able to constantly maintain the Audi in front of me within field of sight due to severe eye pain it caused me. Is there a law that mandates a safe light output by the headlights? because I find led taillights in general painfully bright to varying degree amongst different carmakers, with Audi having the most severely painful brightness (similar to looking at the sun).

See all problems of the 2014 Audi S6 🔎.