The urban transportation sector's environmental, economic, and social footprint is immense and expanding. Many of the world's most vexing and pressing problems - fossil fuel dependency, global warming, poverty, and social exclusion - are inextricably tied to the transportation sector. Much of...

This paper explores multiple dimensions of complexity in a U.S. transportation-policy context, discusses the implications of these dimensions for policy change, and to the degree appropriate, suggests strategies that might be pursued to overcome, or at least better "manageʺ, complexity. Three...