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...Sustainable built environment vol ii economics of the transportation system kenneth button school public policy george mason university usa keywords demand supply costs networks equilibrium economic development economies scope contents introduction systems scale density and market presence problems congestion in allocating expanding capacity regulation conclusions glossary bibliography biographical sketch summary comprises many sub often characterized by mode transport involve geographical nature its location or types activity engaged upon this article examines how economists view looks at some key concepts that they deploy their analyses network generates a set characteristics such as focus activities on hubs need to develop pricing cope with non uniform patterns complex investment criteria have been subject considerable over years although more recently there reductions level intervention unesco eolss markets changes regulations remain approach is both outline ways which provides ful...