• The National Council for Public-Private Partnerships (NCPPP) - URL: http://ncppp.org
• AASHTO/FHWA Innovative Finance Web Site - URL: http://www.innovativefinance.org
• FHWA Asset Management Website - URL: http://www.fhwa.dot.gov/infrastructure/asstmgmt/index.htm
• U.S. Department of Transportation TIFIA Credit Program - URL: http://www.tifia.fhwa.dot.gov
• The American Road & Transportation Builder's Association - URL: http://www.artba.org
• American Association of State Highway and Transportation Officials - URL: http://www.transportation.org
• American Public Transit Association - URL:http://www.apta.com
• International Bridge Tunnel and Turnpike Association - URL:http://www.ibtta.org
• World Road Association (PIARC) - URL: http://www.piarc.org
• International Road Federation - URL: http://www.irfnet.org
• International Bank for Reconstruction and Development - URL: http://www.worldbank.org
• Asia Development Bank - URL: http://www.adb.org
• Inter-American Development Bank - URL: http://www.iadb.org
• European Bank for Reconstruction and Development - URL: http://www.ebrd.com
• European Investment Bank - URL: http://www.ebrd.com
• European Union - URL: http://www.europa.eu.int
• European Union Transport Activities - URL: http://www.europa.eu.int/pol/trans
• Organization for Economic Co-operation and Development - URL: http://www.oecd.org
• United Kingdom Highway Agency - URL: http://www.highwaysgov.uk
• Reason Public Policy Institute - URL: http://www.reason.org
• Diebold Institute for Public Policy Studies - URL: http://www.dieboldinstitute.org
• U.S. General Accountability Office - URL: http://www.gao.gov
• The World Bank - URL: http://www.worldbank.org/transport/roads/toll_rds.htm