However...
However, in my state, the location of speed traps (which, lets face it, is why the police are marked in Waze) is considered public information, and in fact the public access channel lists the speed trap locations (or at least it used to.) It would be considered illegal here to have anyone tell anyone else "no, you cannot post this information." (edit: Well, freedom of speech, you as a citizen can SAY whatever you'd like, but wouldn't be able to enforce in any way having someone not post the info.)