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Author
- ESRI18
- Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)17
- Federal Highway Administration, Office of Planning, HEPP-17
- International Steering Committee for Global Mapping (ISCGM)7
- Federal Railroad Administration (FRA)4
- Tele Atlas North America, Inc.4
- FHWA3
- Federal Highway Administration2
- Federal Highway Administration (FHWA)2
- Federal Transit Administration (FTA)2
- National Atlas of the United States and the United States Geological Survey2
- Vanderbilt Engineering Center for Transportation Operations and Research Vanderbilt University2
- Bureau of Transportation Statistics1
- Department of Commerce, Census Bureau, Geography Division1
- Federal Aviation Administration1
- Federal Motor Carrier Safety Administration1
- National Renewable Energy Laboratory1
- Research and Innovative Technology Administration's Bureau of Transportation Statistics1
- Surface Deployment and Distribution Command Transportation Engineering Agency (SDDCTEA)1
- U.S. Geological Survey1