American Association of State Highway and Transportation Officials
American Public Transit Association
The American Road & Transportation Builder's Association
Build America Transportation Investment Center (BATIC)
Federal Transit Administration
Inter-American Development Bank
International Bridge Tunnel and Turnpike Association
International Bank for Reconstruction and Development
European Bank for Reconstruction and Development
European Union Transport Activities
The National Council for Public-Private Partnerships (NCP3)
Organization for Economic Co-operation and Development
Reason Public Policy Institute
United Kingdom Highways England