APynckel wrote: There's no grey area when it specifically states the way you have to post the sign.
Personally, I consider it grey until there is case law. Sure a 3/4" text isn't valid, but I'm not betting on it until I see courts rule that way.
I agree, the law is pretty explicit here, but if you think that a LEO is going to bust out a ruler and let you go, I'd be very surprised.