In some municipalities, the days of seeing flashing lights in your rearview mirror after accidentally running a red light are gone and have been replaced by red light cameras (RLC). Unlike human police officers, these red light cameras work 24 hours a day, 365 days a year, constantly on the lookout for red light violators. Drivers may not even be aware of a violation until they open their mail weeks later. Red light cameras can detect cars running a red light, as well as failure to stop at a right-on-red intersection. Some cameras can also determine if a car is speeding, red light cameras and speed cameras are generally different. Both cameras differ from traffic cameras used to monitor traffic flow.
To get around some legal issues, violations detected by red light cameras are considered non-moving violations and there are no criminal charges associated with them. They are not reported to insurance companies, so it does not matter who the actual driver of the vehicle was. Administratively, they are treated like parking tickets.