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Author
- International Steering Committee for Global Mapping (ISCGM)92
- Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)9
- Federal Railroad Administration (FRA)4
- Office de la Topographie et de la Cartographie4
- Direccao Geral de Geografia c Cadastro3
- FHWA3
- Ethiopian Mapping Agency2
- Federal Highway Administration (FHWA)2
- Federal Transit Administration (FTA)2
- Vanderbilt Engineering Center for Transportation Operations and Research Vanderbilt University2
- Federal Aviation Administration1
- Federal Highway Administration1
- Federal Motor Carrier Safety Administration1
- National Renewable Energy Laboratory1
- Volpe NTSC1