http://www.sfgate.com/bayarea/articl...ns-6079819.php

Witty street signs designed to curb speeding have brought international attention to the city of Hayward....

Last year, the city heard complaints in a neighborhood meeting about speeding in the area. They used ordinary methods to crack down — enforcement, potential engineering fixes, and outreach — but also considered more novel approaches.

“Let’s juxtapose an unconventional message with a conventional medium to catch people’s attention,” said Frank Holland, a city spokesman. “If it starts a conversation, maybe people will change their behavior.”...

Holland came up with the messages — one says, “Heads Up! Cross the Street Then Update Facebook” — and the response has been overwhelming. National and international media outlets have contacted Holland about the signs.