My wife got pulled over yesterday for Improper Use of a Center Turn Lane. In Georgia, the law is you can only be in the CTL for 300 feet before you turn.
She came home all self-righteous, all "I didn't know that law", and when I told her it's the law, and she broke it, she accused me of being unsupportive, then called her mother who said basically the same thing but I got in trouble for it.
*sigh*
By signing your driver's license, you implicitly agree to obey all traffic laws. Just because you don't know them doesn't mean they don't affect you.
(Sorry. Had to rant.)