The number of motorcycles in many Latin American cities, such as São Paulo, Rio de Janeiro, Brasilia and Bogotá, has grown much faster than the automobile fleet in recent years. In many Asian cities, motorcycles and three-wheeled vehicles are the primary modes on urban roads.
I just returned from São Paulo, perhaps the third biggest metropolitan area in the world with a population of 18 million and an endless vista of apartment towers and commercial buildings in almost any direction from the center. The traffic problems are large and reported in the daily newspapers as the peak number of kilometers of the main road network in congested conditions (equivalent to LOS F). This indicator tends to range between 100 and 200 km for any given day. The resources that