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Definition |
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U.S. Flag Carrier or American Flag Carrier (Air)
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One of a class of air carriers holding a Certificate of Public Convenience and Necessity, issued by the U.S. Department of Transportation and approved by the President, authorizing scheduled operations over specified routes between the United States (and/or its territories) and one or more foreign countries. |
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Unified Planning Work Program (UPWP)
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The management plan for the (metropolitan) planning program. Its purpose is to coordinate the planning activities of all participants in the planning process. |
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Union of Soviet Socialist Republic (U.S.S.R)
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Consisted of 15 constituent republics Armenia, Azerbaijan, Belarus, Estonia, Georgia, Kazakhstan, Kyrgystan, Latvia, Lithuania, Moldava, Russia, Tajikistan, Turkmenistan, Ukraine, and Uzbekistan. As a political entity, the U.S.S.R. ceased to exist as of December 31, 1991. (DOE3) |
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United States (U.S.) Territories
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Include Samoa, Guam, the Northern Marianas, Puerto Rico and the Virgin Islands. (FHWA2) |
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United States Code
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Contains a consolidation and codification of all general and permanent laws of the U.S. (USCG1) |
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United States Travel and Tourism Administration (USTTA)
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An agency in the Commerce Department; it's principal mission is to implement broad tourism policy initiatives for the development of international travel to the U.S. as a stimulus for economic stability. (USTTA1) |
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Unlinked Passenger Trips (Transit)
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The number of passengers boarding public transportation vehicles. A passenger is counted each time he/she boards a vehicle even if the boarding is part of the same journey from origin to destination. |
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Unpaved Road Surface
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Gravel/soil and unimproved roads and streets (Surface/Pavement Type Codes 20, 30 and 40). (FHWA2) |
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Urban Highway
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Any road or street within the boundaries of an urban area. An urban area is an area including and adjacent to a municipality or urban place with a population of 5,000 or more. The boundaries of urban areas are fixed by state highway departments, subject to the approval of the Federal Highway Administration, for purposes of the Federal-Aid Highway Program. |
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Urbanized Area
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Area that contains a city of 50,000 or more population plus incorporated surrounding areas meeting size or density criteria as defined by the U.S. Census. |
