Last I heard on this issue, Lockheed Martin manufactures these cameras. They install them, maintain them, and they get a peice of the action for their efforts. That's right they get a percentage of all the fines generated. They have already been caught, in at least one instance, lowering the yellow light time as a way to increase their take. They would have gotten away with it, but an engineer got ticked and he challenged them and won. I wonder who monitors these revenue generators for accuracy at all the other locations???
This crap (raising taxes under the pretext of law enforcement) is giving respectable middle-class folks a contempt for cops that rivals that of ghetto gang-bangers.