Latin America and the Caribbean is the most urbanized region in the developing world with a rapidly growing vehicle fleet. The main source of air pollution in these urban areas is motor vehicles, especially those which are old and poorly maintained.

In developing transport emission control and prevention programs for cities, an effort must be made to build on existing measures in Latin American cities, and to learn from the experiences of other countries. In addition, the private sector has to be closely involved in the programs to reduce transport emissions in cities.

The Clean Air Initiative partners in collaboration with the Institute for Energy and Environmental Research (IFEU) is currently developing an Information Pool with comprehensive information on cleaner vehicle/fuels technologies for urban buses and trucks.