[Incienso]

I always see people here advocating to keep your lights off unless it's needed,and even offering advice on how to defeat DRL circuits, because it apparently saves some fuel. But how much fuel is really saved?

I ask this question because it's been rainy in Ann Arbor lately, and I see a lot of people drive with their lights off in the rain even at dawn/dusk. I hate this and I think it's a huge safety issue to drive with lights off at all - I /always/ drive with my lights on even in broad daylight so other drivers can see me better.

I'd rather take the (I think minuscule) mileage hit by leaving my lights on, than be unsafe. Isn't that why there are DRL laws in some jurisdictions?