Right. Make more signs. People will then follow them.
I cannot help but think of the joke where the guy lost his brakes going down a mountain and was not worried because there was a Stop sign at the bottom of the hill.
Or Bill "Here's your sign" Engvall
I agree signs and laws do little to help. A law was passed in Texas several years ago and thousands of signs were placed all over the state. I believe Texas is better than Florida with left-lane oblivions, but not by much.