it was either in car and driver or road and track, where some cities got busted b/c the amount of time a light stays yellow has to be X.X seconds before turning red and they were shortening that time so it would turn red sooner and give out more tickets via the camera...when it was discovered many cities were doing this, every person who had gotten a ticket from those particular cameras had their tickets thrown out and the cities were forced to fix it to the proper interval of time