 Similarly, a city might redesignate a section of the curb from “no parking,” enforced by an administrative fine to metered parking. The “no parking” designation prohibits parking in the identified zone while meters permit parking upon payment of the (licensing) fee. The city presumably expects that, under “no parking”, the stretch of curb will remain clear, while it expects cars to use the same stretch when parking is metered. The distinction between a prohibition and a permission clearly has expressive  content.[17] 