those are illegal...its an old practice that is frowned upon now...if you aren't a LEO, it isn't going to do you any good...I got a speeding ticket in OHIO...I didn't mention I was an officer until he peeved me off, at which point, I explained to him, if I were in the adjoining county in my state, I would make his name famous. I would ticket every OHIO plate I could and tell them, "compliments of officer so and so"....he didn't like that so well....but I felt better...still cost me $140....lol