The Biosphere Eco-City (BEC) model divides sustainability into broad areas of interest. These Ten Themes provide a clear focus for discussion and action. Because they are concrete, they are also easy to understand. Discussion groups, based on Themes, can bring together people who share common interests. It furthers cooperation.
This theme focuses on the movement of goods and people. Projects may address such issues as travel distance and time, energy savings, safety, and convenience. Because transportation is a dynamic system, projects are build on previous results. For example, an activity to develop a public transit system might follow a more fundamental study of transportation questions, such as the relationship of travel to employment and health.