It’s been five years since Baton Rouge launched a traffic light camera program, and data released recently shows drops in both traffic crashes and violations at the selected intersections. The Advocate reports Baton Rouge’s Department of Public Works evaluated intersections where traffic cameras were installed in 2008 and 2009 by comparing the average number of crashes in the years before and after the cameras took effect. The study showed a sharp decline in right-angle crashes — considered the most dangerous type of collisions — but also showed slight increases in rear-end crashes.