Not a traffic violation.
If it's not a traffic violation, then why the charge?
Parking and tolls are not safety issues but these red light cameras were justified as a safety issue.
So the fine isn't a fine but instead is a toll for your car being used to drive through a red light.
“If it’s not a traffic violation, then why the charge?”
1. To raise money to pay for the cameras.
2. To discourage red light running.