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Author
- Battelle Memorial Institute1
- Blades, Doug1
- Firestine, Theresa1
- Hudgins, Andrew1
- Hunt, Raquel4
- Institute for Water Resources (U.S.). Navigation Data Center2
- Jessberger, Steven1
- John A. Volpe National Transportation Systems Center (U.S.)1
- Lubkin, Samantha 1
- Miller, David1
- Strocko, Ed2
- United States. Bureau of Transportation Statistics21
- United States. Bureau of Transportation Statisticsf1
- United States. Federal Aviation Administration2
- United States. Federal Highway Administration3
- United States. Federal Highway Administration. Office of Highway Policy Information1
- United States. Federal Transit Administration2
- Vanderbilt Engineering Center for Transportation Operations and Research2
- Waterborne Commerce Statistics Center (U.S.)3