"Red light cameras catch all violations of the red light with amazing efficiency. While upwards of 90 percent of red light violations occur within the first second of the light turning red, more than 90 percent of accidents occur after the light has been red for 5 seconds or MORE, according to statistics gathered in a 2004 study by the Texas Transportation Institute."
Here in CA, and I assume in all other states, "blowing a red light" is defined as the rear axle passing the line (visible or not) where the sidewalk ends at the intersection while the light is already red. If not going too much over the speed limit, one should always have enough time to stop. The more dangerous intersections have a six second yellow light, others have three.
The camera is a lot more accurate than a cop when it's close. A cop can give you a ticket when it looks like you blew the light when you did not. The red light camera won't make such a mistake.
Of course there will be more tickets from the cameras but that is only because the camera is there 24 /7. I bet if a cop was there 24/7 there would be more tickets for blowing red lights, not less, because the cop will give tickets for what it looks like to him, and he's going to favor giving a ticket when it's close, but perhaps you already passed the line by one inch by the time the light went red.
I favor the use of red light cameras.
But I do not like what they do in England where if you can go a mile in distance faster than the speed limit permits you can get a ticket. The speed cameras are mainly to collect revenue.
IMO, the red light cameras have already well proved themselves to be mainly for safety.
-Don-