Foglights used to be add on driving lights and spot lights like these.
http://www.ksealit.com/spot-lights--lamps-111-c.asp
People used to think they would penetrate fog with "the new halogen bulbs" and amber covers being all the rage but they were set up facing forward and were just dazzle monsters
I think the first front foglights appearing on cars were the same, very dazzling and facing forward. But they were just auxilliary front spotlights in reality.
Now manufacturers seem to have come clean, wised up and fit subdued very dull lighting to the sides so people can see the kerb and cats eyes on either side which is much more effective in bad viz. You couldn't dazzle anyone using them
Personally I hate dazzle and I only use dipped headlights when they are actually necessary. I could really throttle someone in a 4x4 with high headlights driving so close behind that their dipped lights light up the inside of my car rather than the road ahead. Drive far enough back so your dipped lights fall BEFORE the car in front.
I also hate the British habit of drivers flashing headlights to say "thank you". "Well thank YOU for blinding me". That's also contrary to the Highway Code
As I said before, the newer Bravo fog light comes on automatically every time they turn to light up that side of the kerb. Side lights would be a better term for them because that's what they do.
The term "sidelights" is out of the 1930s and the Highway Code should catch up with that too - they're "position lights" not sidelights or parking lights. They're not just for parking and they're not on the sides