‘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/EmtnlDmg]

Can confirm. Mine also stays off if it bright enough in fog. Daylight fog can not be detected with a lumen sensor only.