I freakin hate those, they are good but they do not see the whole story as to why some go through the light. My mom got one because he had to move out of the way of an out of control 18 wheeler! I think they should have a video cam pointing the other way to see the circumstances as to why one might not want to stop, like being seriously hurt by the tailgater behind you or even being killed.
Alot of people here buy covers that you cannot see the tag unless you are right on it just so they lession the chance of being nailed. I think they look tacky or else I would get one. That is why I plan to make it so I can flip mine down by button lol.