Good point, that happens with bright tail lights too -- many times I've been approaching someone on the bike path with a super bright tail light, and it's reall

Good point, that happens with bright tail lights too -- many times I've been approaching someone on the bike path with a super bright tail light, and it's really hard to tell exactly how close I am to them as I approach. And it's completely impossible to see if anyone is coming the other way so it's hard to pass.