7National Commission on lntermodal Transportation. Toward a Nationa Intermodal Transportation System. Washington D.C., 1994.
8commission for Integrated Transport. National Road Traffic Targets,Advice by Commission for Intergrated Transport, CfIT, London, 1999.
9Multimodal Transportation Options. Maricopa Association of Governments Regional Transportation Plan Update Demographic and Social Change Issue Paper (June 2001-Prepared by BRW, Inc. ).
10Heejoo Ham,Tschangho John Kim, David Boyce. Assessment of economic im-Pacts from unexpected .events with an interregional commodity flow and multimodal transportation network model. Transportation Research,Part A39 (2005):849-860.
