Alabama Policy Institute
Allegheny County Municipal League
American Bus Association
American Highway Users Alliance
American Legislative Exchange Council (Washington)
American Petroleum Institute (grant)
Ansaldo
Association of American Railroads (grant)
Association of Towns of the State of New York
ATC-Vancom
Atlanta Regional Council
Atlantic Institue for Market Studies (Halifax)
Automobile Association of New Zealand
Bi-State Development Agency (St. Louis)
British Columbia Transit (Vancouver)
Bucks County (PA) Association of Township Supervisors
Cato Institute (Washington)
Chester County (PA) Association of Township Supervisors
Christchurch (New Zealand) Transport Board
Chugach Electric
Citizens for a Sound Economy
City of Calgary
City of Portage, Michigan
City of Toronto (Former)
Coalition for Smart Growth (Pittsburgh)
Coalition on Sustainable Transportation (Austin)
Commonwealth Foundation (Harrisburg)
Competition Commission, Government of Australia
Delaware County (PA) Paratransit Association
Deloitte Touch
Durham School Bus Company
Economic Institute of Montreal
Federal Transit Administration Entrepreneurial Services Program
Federal Transit Administration Public Private Transportation Network (Qualified "Expert")
Florida Public Policy Institute
Fort Wayne ((Indiana) Public Transportation Corporation
Fraser Institute (Vancouver)
Frontier Institute for Public Policy (Winnipeg)
Georgia Public Policy Foundation
Georgians for Better Transportation
Goldwater Institute
Greyhound
Grosvenor Bus Company
Hamilton (Ontario) Home Builders Association
Heartland Institute (Chicago)
Heritage Foundation (Washington)
Home Builders Association of Greater Columbia
Home Builders Association of Maryland
Home Builders Association of South Carolina
Housing Industry Association (Australia)
Housting Industry Association of South Australia
Houston-Galveston Regional Council
Houstonians for Responsible Growth
Illinois Taxpayers Education Foundation
Independence Institute
Indiana Township Association
James Madison Institute (Tallahassee)
Keolis Transportation
KPMG Peat Marwick
Laidlaw
Medicine Lake Bus Lines
Metropolitan Transportation Association (Chicago)
Michigan Township Association
Montgomery County (PA) Paratranist Association
MV Transportation
National Association of Home Builders
National Express PLC
National School Transportation Association
New South Wales Ministry of Transport
North Carolina Speaker of the House of Representatives
Oakland County (Michigan)
Ohio Township Association
Oklahoma Council of Public Affairs
Passenger Transport Board (Adelaide)
Pennsylvania Association of Township Supervisors
Peter Pan Bus Company
Railway Tie Association
Reason Foundation
Regional Transit Authority (New Orleans)
Regional Transportation District (Denver)
Residential Development Council (Australia)
Road Transport Forum of New Zealand
South Carolina Land Owners Association
Southeastern Pennsylvania Transit Authority (Philadelphia)
Suburban Mobility Authority for Regional Transportation (Detroit)
TAM (Slovenia)
Tasmania Ministry of Transport
Texas Governor's Business Council
Texas Public Policy Foundation
Township Officials of Illinois
Trammel Crow Residential
Transit New Zealand
United States Millennial Housing Commission
University of California Santa Barbara
Urban Transport Council (New Zealand)
Victoria (State of) Ministry of Transport
Wal-Mart Stores
Washington (State of) Legislative Transportation Committee
Wisconsin Association of Towns
Wisconsin Policy Research Institute