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Federal
Shipping Fairways, Lanes, and Zones for US waters
National Oceanic and Atmospheric Administration, Department of Commerce —
Various shipping zones delineate activities and regulations for marine vessel traffic. Traffic lanes define specific traffic flow, while traffic separation zones... -
Federal
National Highway Planning Network
Department of Transportation —
The National Highway Planning Network (NHPN) dataset was compiled on May 01, 2014 from the Federal Highway Administration (FHWA) and is part of the U.S. Department of...