Curious about some of Retting's crash conclusions, the National Motorists Association's Jim Kadison secured accident data for the red-light-camera intersections Retting used in his latest Oxnard report. Retting had estimated that the use of red-light cameras had resulted in a tiny 3 percent increase in rear-enders at all signalized intersections. But after expanding the definition of an intersection to include 100 feet into the approaches, where rear-end accidents would logically occur, Kadison found that during the time of Retting's study, rear-end crashes at red-light camera intersections increased from 18 (before installation) to 156, for a total rear-end accident increase of 767 percent.