‘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/stevekuehltruhe]

Nope. They work with a brightness sensor. Technically speaking it's "bright enough" in the fog so they don't activate.

I think for some premium cars they work in conjunction with other sensors and maybe even GPS/weather data.

Edit: But what I really find annoying is that the dtrl only light up the front LEDs and not the rear lights. I feel like that would be the bare minimum for this case.

[u/Qweasdy → u/stevekuehltruhe]

think for some premium cars they work in conjunction with other sensors

Even my Ibiza will turn the headlights on if the automatic wipers sensor is activated. That won't do anything for fog though, the important part, imo, is that you actually know what your car is doing and what it should be doing.

Automatic headlights are no excuse for not using your headlights when you should.