Most of us live in the same communities as the police. Why not have the option to report where police reside. I know for a fact that I have 4 in my area and one of them uses their address to help him catch people for tickets. For the record, he's never invited to the block parties! But also, most of the time, they put their cars on the road so you don't know if they are working or not. Local people know when they are working or not and could post it as a dummy car. Or, when a decoy car is around, post it as a decoy. Just my 5 cents that's worth about 2 cents!