8. As a lawyer, I agree that this is very good advice.
And following it may well help you get away with just a warning rather than a ticket. My experience has been that you're much more likely to get a break from a State Trooper than a municipal cop. Municipalities all over the country are in a cash crunch and aggressive ticketing is a great revenue source. (I recently got nailed for "2 over the limit" on a 4-lane divided limited access highway at 4:30 A.M. Sunday morning in the outskirts of a small Virginia town. These guys are just sitting there all night waiting for the radar gun to beep.) So watch the small places.