bike sharing _ A successful model. Bike sharing is one way to create a more eco-friendly society. But has it worked? The answer is yes. Bike sharing is now popular in hundreds of cities around the world. One of the most successful programs is in Paris, and there are three reasons for its success. First, the city planned its program carefully. The city leaders found the places where residents and visitors would need bikes the most. Then they placed them conveniently at bus stops and subway stations. They also made sure that the next bike station was never far away. Second, the city leaders made the service cheap. in this way , the city made the service low-cost for users. They did this in a clever way: they found a company which wanted advertising space. In exchange for advertising space, the company paid for the bike stations. Third, the city presented the program as modern and fashionable. Bikes were presented as a new and cool way to travel around the city. This made the program popular.