On July 15, 2007 Paris debuted the world’s largest self-service “bicycle transit system” called Vélib outdoing previously designed bike share programs. Vélib is a balance of scale and functionality, clocking in with more than 20,000 bikes, and 1,451 docking stations, which are never more than 1,000 feet apart. As a result, Vélib is effectively a new form of public transportation that has generated more than 25 million new bicycle trips in its first year, 10% of which substitute former car trips.Today the program celebrates its first anniversary. And, throughout the year cities across the globe have kept a close eye on the progress of this environmentally-friendly public transportation mode. Overall, bike-share programs have proven to increase public transportation options at a relatively low cost to the city. Any registered user can “borrow” a bike from a station for a nominal fee and return it to any other station in the system. In Paris, Vélib has saved the city 10 million km in car trips, roughly equal to $10 million in savings. With 200,000 Parisians paying the city $50 each for an annual Velib pass, this has yielded an additional $10 million in revenues. Beyond economics, Paris has seen tremendous traffic calming and air quality benefits from this public bicycle system.