It’s a racket. A red light camera company came into Atlanta, first thing they did was to get the city to lower the time the yellow lights stayed on. If you’re 10 feet from an intersection, and the light goes to yellow, you can’t stop in time and you can’t cross the intersection before the light turns red. Traffic tickets soared at red lights.
The state legislature got involved and mandated yellow lights remain yellow throughout the state for a minimum of 4 seconds. The number of red light tickets in Atlanta dropped by 80%. Solid evidence the company wasn’t really catching people intent on running red lights, but just trapping innocent drivers.
Even here in liberal Minneapolistan they were banned years ago as unconstitutional.