I have an addition to your great points here re #2. There have been numerous times, as an automobile driver, I'll be approaching a cyclist at night with a brigh

I have an addition to your great points here re #2. There have been numerous times, as an automobile driver, I'll be approaching a cyclist at night with a bright light, and it's so blindingly bright in the darkness it actually makes it hard to precisely see them. Almost like someone taking a pic in your face at night with a flash, or walking from a very bright room outside where it's dark. It takes your eyes longer to recover and see the surroundings clearly again. The closer you get to them, the harder it is to "see" them, which is very dangerous. The same is also true for some modern car headlights that are so bright it almost looks like they are driving with their highbeams on.