Mesa [Arizona] has struggled with earning a significant profit from its program since November 2000 when the city increased the duration of the yellow warning signals at left-turn intersections from 3.0 to 4.0 seconds — in violation of a Lockheed Martin IMS contract stipulation that mandated no timing improvements be made. As a result, red light violations dropped 72 percent at those intersections and never returned.
Imagine that.