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- United States. Bureau of Transportation Statistics10
- United States. Army. Corps of Engineers.2
- United States. Federal Highway Administration.2
- Environmental Systems Research Institute (Redlands, Calif.)1
- Federal Highway Administration1
- Research and Innovative Technology Administration's Bureau of Transportation Statistics1
- TomTom North America, Inc.1
- U.S. Customs and Border Protection1
- United States. Bureau of the Census.1
- United States. Federal Aviation Administration1
- United States. Federal Aviation Administration.1
- United States. National Imagery and Mapping Agency1