In my city it looks like this.
If you enter the intersection when the light is red, the camera takes a picture of your car from the front and another camera takes a picture of the license plate from the rear. Also, there is a 15 second or so video saved of the incident.
A private company in Phoenix sends one of two notices to you. Either you get a citation, or what is called a snitch ticket.
The citation is sent when the picture of the operator is clear and the individual can be identified. Additionally, the picture has to match the gender and age of the registered owner. For instance, it a car is registered to a Mary Smith, age 25, and a 60 year old male is seen driving the vehicle, there can be no citation issued. Move now to the snitch ticket.
If the picture of the driver is not identifiable, IE, sun reflecting off the windshield or whatever prevents the picture from showing a good picture of the driver, OR, the driver and registered driver don’t match (gender, age mismatch) then a snitch ticket is sent.
The citation and the snitch ticket appear remarkably similar but are in fact quite different. The citation has a date and time to appear in court printed on it. It also has information about posting bail. The snitch thcket does not have such a date and time, but it has an area where it tells you that you are required to answer and return the form with one of three options selected. A. You were driving the car. B. IT wasn’t you, it was whatshisname (hense the snitch ticket name) or C. You sold the car on X date. Other than that, the notice you get is designed to look like a ticket, and lead you to believe you must furnish evidence against yourself.
I know, because I got such a ticket. It was a snitch ticket. The driver appeared as a block blob but the license plate was quite clear. (in reality, it was a relative driving, not me) A little research on the internet led me to the above, and I responded by ignoring the notice. After a year, which has passed, the charges can not be pursued by the state.
This is the way it is in my jurisdiction, and probably in most of California, YMMV though in your jurisdiction.