This and other "Share the Road" programs that Eric writes about work to address my biggest complaint about the message, which is that it's frequently misunderstood to mean "Get out of the way." The traffic safety education is good, but I still believe signs like "Bikes Allowed Full Use of Lane" are better.
A few cities in California use these signs in lieu of "Share the Road" signs. In Santa Cruz, local cycling advocates rejected "Share The Road" signs as ineffective, demanding and getting signs that show cyclists using the entire lane in spite local police department protests.
Do you believe "Share the Road" is effective? Does anybody outside of California demand alternative signage?