but the stop light ones are not put at accident prone intersections, just ones where more people are liable to squeak through, like where the speed limit has just changed.

Or where they change the timing of the yellow lights so that the yellows are unimaginably short, or where they lengthen the red/green intervals making the red light wait times maddeningly long. Both of which are carefully calculated to increase the desire for people to run the red lights while simultaneously installing a nearly-automatic system for collecting increased revenue from it.

God, city governments really really suck. I hate politicians and civil engineers...