Here is a true story that proves they are not infallible. I traded a car in to a dealership here in Toledo, where I live. I paid a fee for them to "dispose of my license plates" because they were not transferable. A few months later, I got a red-light-photo ticket in the mail... with my OLD LICENSE PLATES! A salesperson stole the plates and used them on his car. The worst part of it all was that the car in the photo was a red two-door and the ticket was for a purple four-door sedan. They claim that a human studies each ticket before it gets sent out. Riiiight. Anyway, I don't trust the camera's and I often need to slam on my brakes to stop, just to be sure that I don't get a ticket. Sorry for the tangent. Thanks for listening and have a nice evening.