I've been noticing, more and more, the bright white lights (sometimes even bluish) that are appearing on cars. I would estimate that now, up to a third of cars have bright white headlights. Obviously, this contributes to light pollution. It even contributes, in a negative way, to traffic safety. These are absolutely blinding to oncoming traffic. In fact, I've noticed that those lights are blinding even in the daytime. And this is something I would have thought is not possible a few years ago. Not only are these lights much brighter than older lights absolutely. But my eyes recover much more slowly with white than yellow.
I don't know if the problem is mostly because manufacturers are putting these lights on new cars now, or if these are aftermarket modifications. I suspect some of each.
I have no idea about what can be done about this, if anything. Furthermore, if people don't care that their headlights may be blinding approaching drivers, potentially causing fatal accidents, how are they going to care that Astronomers can't see the Milky Way, or that birds will fly into buildings?