As a case study, this article looks at 4th Street in Los Angeles, where activists and local cyclists have been working for years to spread the message about the street's bikeability.
"A movement has been afoot for years to remake 4th Street as a "Bike Blvd," a bike-friendly street with various road improvements (such as traffic diverters, signage, or lane markings) that help bikes, cars, and pedestrians safely share the road. (To get an idea of how Bike Blvds work, take a look at this example from Portland, Oregon.) By posting temporary signs and road stencils along the route and organizing group rides, activists have in the past drawn attention to the potential of 4th Street as a biking resource. The efforts of the organizer Ingrid Peterson have led to city council member Tom LaBonge, whose district encompasses 4th Street, joining group rides along 4th Street in 2007 and 2008. If you're interested in learning more of the history of these efforts, Peterson maintains a website that is a clearinghouse of information for all things relating to the 4th Street Bicycle Blvd (or 4SBB) movement."