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United States. Government Accountability Office
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United States. Congress. Office of Technology Assessment
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Geological Survey (U.S.)
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Melvin, Valerie C.
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National Cooperative Highway Research Program
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United States. Department of Homeland Security. Office of Inspector General
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American Association of State Highway and Transportation Officials
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Barclay, Rebecca O.
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Ebook Library
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Knovel (Firm)
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Kuhn, Beverly T.
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Loo, Shirley
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Rand Corporation
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Smith, Mary F.
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Southwest Region University Transportation Center (U.S.)
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United States. Agricultural Research Service
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United States. Congress. Senate. Committee on Finance
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United States. Congress. Senate. Committee on Homeland Security and Governmental Affairs
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United States. Federal Highway Administration
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Walter de Gruyter & Co
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Barker, William C.
2 results
Castronovo, Russ, 1965-
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Eldred, Janet Carey
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Gabehart, Scott, 1961-
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Garber, Alan M.
2 results
Gillespie, Michele
2 results
Hall, Randal L., 1971-
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Industrial Environmental Research Laboratory (Research Triangle Park, N.C.)
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John A. Volpe National Transportation Systems Center (U.S.). Service Assessment Division
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Johnson, Allison M., 1984-
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