Your first link is a red herring. We are trying to increase safety, not reduce red light violations.
Your other two links make a common mistake in traffic safety debates by assuming that an increase in accident rates is a decrease in safety. Look at the types of accidents that are increased or reduced by red light cameras and you'll see that they generally do make intersections safer by reducing high speed, side impact collisions. This comes at the cost of increased low speed collisions, namely people running into someone's bumper as they slam on their brakes to avoid the red light ticket which is a psychological (risk aversion) problem, not a problem with the technology itself.
Your other two links make a common mistake in traffic safety debates by assuming that an increase in accident rates is a decrease in safety. Look at the types of accidents that are increased or reduced by red light cameras and you'll see that they generally do make intersections safer by reducing high speed, side impact collisions. This comes at the cost of increased low speed collisions, namely people running into someone's bumper as they slam on their brakes to avoid the red light ticket which is a psychological (risk aversion) problem, not a problem with the technology itself.