Originally Posted by BadTA
What I don't understand is, why would fog lights with High Beams be illegal?
It's based on the idea that fog lights are meant for fog, which is means you would never want your high beams on. Using them in fog would make it harder to see due to the light reflecting back at you. Further, it spreads the light more, making it more likely to blind oncoming drivers.
So, it's not the fog lights, it's the reason for using them.
Having said that, it's an outdated law because it was made before SUVs and large trucks started becoming popular.
The reason that's an issue is with how high headlights are on those vehicles, coupled with large bumpers that shade the road for 10, 15 and sometimes 20 feet ahead if the fog lights aren't on.
This issue could be resolved, though, by simply having more cars include auto-dipping headlights that will go to low beam when it detects oncoming light, be it from another car or your own headlights reflecting back at you. That would solve the issue of visibility, yet allow you to see the road properly.