It doesn't. Lights are aimed down. In Georgia people, especially cops, are quick to let you know when your lights are too bright. I don't blind anyone. I don't have people readjusting mirrors when I pull up behind them. My TL however, with factory HID's and projectors all aimed properly too gets flashed often
I said it before. That is definitely blinding other people. People seem to think that if someone doesn't flash them, or pull over to tell them their lights are blinding, then their lights are fine. But how often do most people flash people for leaving their high beams on or anything else? Certainly no one ever stops to tell people their lights are too bright. You never know when you are going to meet some crazed ####### with a gun or a knife or start some crazy person on some kind of road rage that will end in someone being hurt or killed.
The worst part? Most of that light is a blob in near field that will just make seeing anything harder if that vehicle ever leaves a well-lit city street. As I have tried to explain to people so many times before. Often times, less light is more.
I see the scale put up by MustangP51, I see his point but here's the issue, its showing a spectrum you can't see with your eye if you saw the vehicle in person.
Every car does not need a retrofit to produce sufficient clean light but there are those that do, ex: Every honda from 92-2004 and all mustangs from 04-present