They tried the Camera experiment here in New Jersey. After multiple complaints a State Senator fought to get them removed. Since it was under a pilot program they eventually got rid of them in most towns & cities. However Newark and a few others still have them in place. They would not remove them because of the income they generate !
Not 100 % sure this is true, but many cameras were at least a 1/2 of second shorter they were suppose to be. In other words they took pictures and fined people even when they should not have been.