My experience is that the running of red lights is getting much worse. The only intersections I have seen an improvement are those with cameras - go figure.
Longer yellow lights just worsen the problem. People then get use to a longer yellow - more time to go even if not green.....
No, because they'd just shift to arguing in favor of using the cameras to combat speeding (you know, driving 33 miles per hour on a 6 lane divided state highway that for some inexplicable reason is marked 25 even though it has little pedestrian traffic. Well, it's not inexplicable if you know that speed traps raise revenue).
The real issue here is cities trying to get revenue and insurance companies desperately looking for ways to raise rates on drivers who are safe.