•  Alliance of Automobile Manufacturers

•  American Association of State Highway and Transportation Officials

•  American Highway Users Alliance

•  American Public Transportation Association

•  American Public Works Association

•  American Road and Transportation Builders Association

•  American Society of Civil Engineers

•  American Trucking Associations

•  Associated General Contractors of America

•  Bipartisan Policy Center - National Transportation Policy Project

•  Coalition for America's Gateways and Trade Corridors

•  Environmental Defense Fund

•  ITS America

•  National Conference of State Legislatures

•  National Defense Transportation Association

•  Transportation Transformation Group (T2)