Quote:
Originally Posted by cb1111
I bit my tongue for a while in order to not get sucked into a "it is OK to run fogs all the time" but aside from annoying other drivers, they are also bad for the driver.
Fog lights are designed to be used at low speed in weather conditions where visibility is under 50 yards or so.
Your headlights leave a dark area directly in front of your car intended to draw your eyes farther down the road. In poor weather and at lower speeds, you want to illuminate that area AND to light up the edges of the road.
The way the brain processes light is to draw the eyes to the bright areas - so if the area in front of the car is dark, then you look further down the road. If that area is illuminated, then that's where you're going to look.
Not only can't you control that, but it is also something that doesn't always register consciously. Most people will say "nawww, not me, I can see down the road" but tests show otherwise. Link is a pdf
Here is an interesting article.
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This man is absolutely correct on all fronts here.