Road transport

There are now around 750 million automobiles in the world.  At expected growth rates, the number will double in the next 30 years.  The result of so many vehicles includes substantial environmental, economic, ecologic, and land-use impacts. 

There have been moves to introduce cleaner and more fuel-efficient means of transport. There have been experiments using different types of fuel, roads, traffic management and technologies.
Managing the growth in transportation, in both developed and developing countries involves a marriage of technology and planning.  Do so in a responsible green-energy context requires attention to emerging technologies, flexible planning and an understanding of consequences.
Bibliography of research and experiences regarding sustainable transport
Organization with information
The International Institute of Sustainable Transportation was organized to accelerate the redevelopment of transportation powered by solar (renewable) energy.  A registered non-profit, headquartered in Santa Cruz, California, International Institute of Sustainable Transportation has already organized a number of international conferences to that end and has initiated a number of bold projects. 
European Commission sustainable transport web-site
Australian government sustainable transport web-site.
The American Public Transportation Association’s serves and leads its membership in several key ways, including advocacy, innovation, and information sharing.   This web-site contains information on sustainability matters.
The North American Sustainable Transportation Council (STC) was founded in 2009 by transportation planners, project managers, and sustainability professionals to improve the performance of transportation plans and projects. The STC drew inspiration from Leadership in Energy and Environmental Design (LEED) and the Living Building Challenge, planning and certification systems that are transforming the building construction industry by rewarding projects for higher levels of performance.