Traffic cameras are another matter.
The normal situation is that traffic cameras don't produce enough legitimate tickets to pay for themselves. Thus they are basically always configured in an abusive way that racks up the tickets without producing any safety benefit.
How do you configure it in an abusive way?
Unless you think its abusive to get fines for speeding...
You find a spot where the speed limit is too low for the situation.
~45 miles from here there used to be a big speed trap where the interstate went through a little bit of Indian land. I routinely saw an airplane and more cop cars than I would have thought would have served the whole area.
One day they raised the speed limit on the road to reality--and the speed trap vanished. I have never seen either a cop or an airplane in the area since.
Or the half-mile street that's the access to our house. When we moved in there was a bit of a constriction at one point, the speed limit was 25 mph. There routinely was a cop hiding at the intersection of the two half-mile streets. In time the constriction was fixed and the limit was raised to 35 mph. I haven't seen a cop since. Note that the constriction was not in the area of the intersection where the cop racked up a score, it's just the whole street got the speed limit appropriate for one small spot on it.
Or another one that's been there for at least the 25 years we have lived in this city: Northbound there is one house on the street, in that part of the street the road is split with something like 3' of height difference between the northbound and southbound traffic lanes. Because there is a house on the street it's 35 mph rather than the 45 mph that you would expect. (The next mile north has many houses and obviously is 35, the next mile south has no houses and is 45. The mile in question looks like the 45 section, not the 35 section.) Because of the division in the road there's no way a kid from the house (not that I think there have been kids there in all the time we have been here) could get into the southbound lanes. There's absolutely no reason for the southbound traffic to be 35 rather than 45. There's often a cop there racking up a score.