Originally Posted By: GMBoy
As long as factory fog/driving lights are not messed with..they are fine and not in any way blinding to other drivers.
If you add, "as long as they only used in severely foggy conditions," then I would agree. Otherwise, there are many factory fog lamp systems (which are usually just toys in the US market anyway) that create a lot of glare. I'm often glared worse by someone's fog lamps than I am by their headlamps.
Chevrolet trucks from a generation or so back are the worst. My 2001 Cadillac STS was also quite bad. The bulb is completely unshielded, and it was way too easy to install an uncapped bulb in the housing, creating tons of stray light.