| U.S. Federal Support | The National Science Foundation |
| The U.S.Federal Highway Administration | |
| The U.S. Environmental Protection Agency | |
| U.S. Planning Agencies | Alamo Area Council of Governments |
| Houston - Galveston Association of Governments | |
| Maricopa Association of Governments | |
| Oahu Metropolitan Planning Organization | |
| Oregon Department of Transportation | |
| Pima Association of Governments | |
| Puget Sound Regional Council | |
| San Francisco County Transportation Authority | |
| San Francisco Planning Department | |
| Southeast Michigan Council of Governments | |
| Utah Governor's Office | |
| International Support | Council for Scientific and Industrial Research, South Africa |
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