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Publisher
- Esri18
- United States. Bureau of Transportation Statistics15
- Hart Energy Publishing6
- Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)4
- TTG, Inc.4
- Federal Highway Administration (FHWA)2
- Federal Railroad Administration (FRA)1
- U.S. Bureau of the Census (BOC)1
- U.S. Census Bureau (BOC)1
- U.S. Geological Survey1