Red light cameras are supposed to save us from ourselves. They are supposed to decrease red light running and hence decrease collisions, but it just doesn't work that way. It's just another wonderful theory mugged by reality. ( I explain why this might be so in an earlier post).
The latest rude awakening is in Philadelphia, Pennsylvania where two intersections have been data-mined for ten years: five years BCE (Before Camera Era) and five years after (ACI). And guess what? Collisions and injuries went up after the red snappers were hoisted. The theory also posits that t-bone type angle collisions will go down. They stayed the same.
