How effective are Kansas City's red-light cameras? At KCPD Chief Jim Corwin's blog, there's a graph listing all of the intersections with cameras, and it compares the number of tickets during the first three months to the most recent quarter. On average, there's a 58 percent drop in the number of tickets. The conclusion is that people are learning to drive more safely. (That, or everybody's taking the bus.)
There's one notable exception, though: 39th and Southwest Trafficway, which got a red-light camera before anybody else. There's only a 2 percent drop at that location.