I bought a totally stock boring crossover SUV new from the dealer in 2020 and I‘m sick of people constantly flashing their lights at me. Are my factory headlights illegal? It’s possible, but I doubt it. Is it illegal to flash your brights at someone when their own headlights are perfectly legal? I don’t know, but it’s certainly distracting and doesn’t seem safe in precisely the same way that excessively bright headlights are unsafe.