I was recently transferred to Tempe, Arizona for a couple of months while we bring a new office online. In less than a week, I know which intersections I frequently drive though that have red light cameras and know that if the light just turned yellow, it is better to slam on the brakes instead of risking a ticket (quite scary when the a-hole in the car behind you is smoking a cigarette and talking on his/her cell phone at the same time). The big signs warning you about the camera also helps. Bottom line, if these cameras are going to be cost effective, they need to be more covert. As it is now, they might catch the unassuming motorist every once in a while, but people who drive the route often will learn quickly what intersections they need to play it safe in.