The sole purpose of Red Light Cameras is to generate Income. The Mansfield, Texas people set the camera at a major intersection and the freeway at a point so that when you stopped, then pulled forward to turn right, the camera would trip and issue a ticket for failure to stop. Generated millions in fines.
And they aren’t even good at generating revenue for the city...the hometown of FR dumped them after 3 years:
https://www.thenewspaper.com/news/06/632.asp