‘Automatic headlights’ don’t work in fog?

[u/clynchy97]

About 40-50% of the cars we passed on the road today had no headlights on or only had the dim side lights. Do automatic lights not work in fog for these modern cars? Seems super sketchy

[u/Feeling_Mechanic_953]

I don't have autos, and I also don't turn on my headlights for rain or fog. Know why? Because I don't care, if the fog is thick enough for me to warrant headlights, then you still won't see me until I'm 20 feet away. All of the vehicles in these photos are clearly visible.