I am thrilled they put a camera at Leucadia/El Camino REal in Encinitas. I have seen numerous accidents there and at least 3 were fatal accidents over the last several years. The camera just might have saved my life. I drive through that light a few times a day and pushed through many a yellow light before the camera went up. Now I stop no matter what as soon as it turns yellow.
I dont know the story behind all the cameras but at least one was installed for a very good reason.