Front fog lights do work in the fog just most people use them for the wrong reason, front fog lights are designed to light up the curbs or edges of the road and also have a cut point in front of you so not to glare the fog back at you, also you should turn off your dip beam but again most people don’t hence why they don’t seem to work as they should, so it boils down to most people not knowing how to use them in the first place, as being older than most of you I can remember when front fog light bulbs used to be yellow to cut thought the fog better and most road users cannot tell the difference between fog and mist, how many road users see a little mist and think they need to put there front and rear fog lights on, trust me when you drive in thick fog they will work for you but most of us will never drive in thick fog but that depends on where you live.
