Originally Posted by Ijanric

In the last two or three months I've seen six mobile cameras, either in the form of a police van with a camera poking through the back window or a sneaky copper peeking out from behind a tree. Four of these times I was alerted by courteous oncoming cars (one of which was a nice man in a Range Rover who flashed to warn me as I was overtaking at a hundred heading towards one). I, in turn, made sure I alerted as many people as I could by signalling them to slow down as they approached, drawing circles in the air with my left hand to imitate the revolving blue lights. People are always thankful of this. If I had the time or tools, I'd love to have pulled over and made a sign to warn people!