The real concern, as far as I'm concerned, is if the authorities are willing in some cases to withhold some information; how do you know for who they are willing, how much information they are willing to withhold, and for how long they will withhold it? If the reason is predicated on identity, then we tend not to fully trust our authorities.
A fatal accident is not a good time to have this discussion because regardless of whomever drove the car, causing an accidental loss of life is horrifyingly traumatic for everybody.