Unfortunately many tickets in the state of California can not be written without a photo of the face of the driver. You ticket a person, not the owner of the car. I looked into this recently because as a cyclist I've witness horrific drivers AND caught many such instances on camera, which are utterly useless at getting any tickets issued. I realize a personal camera and a state-installed device are not the same thing, but I believe the fact remains -- face photo to identify the culprit, or no dice on tickets.