i have gotten pulled over for the rear smoked license plate cover. Officer said that because it had dirty on it, at a certain angle it was not visible. He saw that i had front tint, smoked tails, exhaust, and no front plate, and said, people usually dont follow those rules anyways, so just go home and take off the cover. no fix it ticket, but thats prolly because i know his boss, so he let me go. Btw.. this was in CA