When I was younger in high school, we used to flash our lights when we saw a car and also saw the police. That way they could slow down and not get a ticket :)
But I found this interesting article that explains: Here’s What It Actually Means When Someone Flashes Their Headlights at You
"Flashing headlights can actually mean a few different things, depending on the context. Fortunately it only takes a second to check the two things the other driver might be trying to alert you to: your own headlights, and potential dangers ahead of you in the road."
Anybody have any other reasons they know about?
But I found this interesting article that explains: Here’s What It Actually Means When Someone Flashes Their Headlights at You
"Flashing headlights can actually mean a few different things, depending on the context. Fortunately it only takes a second to check the two things the other driver might be trying to alert you to: your own headlights, and potential dangers ahead of you in the road."
Anybody have any other reasons they know about?