Ten years ago Illinois legislators allowed Chicago-area suburbs to install red light cameras, with the caveat that the state transportation department would need to approve them. They would also only be approved fro the most dangerous intersections. But a Tribune analysis found that often didn’t happen. More often than not, these cameras were placed at intersections that didn’t meet the threshold to qualify for a camera.
For this story I created an interactive map showing camera locations in the Chicago suburbs. These cameras were then coded by different metrics, showing whether they met state standards or not.