• Business: Automotive  (3,200)
• Business: Industrial Goods and Services: Engineering: Civil: Traffic and Transportation  (14)
• Business: Industrial Goods and Services: Industrial Supply: Materials Handling  (1,620)
• Recreation: Autos  (7,556)
• Recreation: Motorcycles  (2,586)
• Recreation: Roads and Highways  (1,268)
• Recreation: Travel: Transportation  (361)
• Science: Technology: Transportation  (95)
• Society: Issues: Transportation  (181)

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• Amerijet International - Global cargo transportation services by land, sea, and air.
• Fleetbrowser.com - Provides resources on the commercial vehicle, transport and logistics industry.
• Harmer E. Davis Transportation Library - Library of the Institute of Transportation Studies at the University of California, Berkeley.
• MyYellow.com - Provides transportation and logistics tools and services.
• The National Transportation Library - Provides online access to documents and databases covering all aspects of transportation in the US. Material comes from public and private organizations and access is free.
• Röhlig - Multinational network whose core business is intercontinental sea and airfreight, but also offers land transport and project business. Provides online the latest status on the location of consignments. Company profile, services offered.
• Trans Pixs Worldwide - Photos of all transportation modes, including railroads, rapid transit, city and intercity bus, commercial and military aviation, shipping, trucking.
• Transport Canada - Develops and administers policies, regulations and services for the transportation system. Information on modes of transport, environment, emergencies, and media.
• Transportation Research Board - Promoting innovation and progress in transportation through research. The Board fulfills this mission through the work of some 200 standing technical committees and task forces that address all modes and aspects of transportation.
• Transportation Safety Board of Canada - Canadian agency responsible for investigating air, marine, rail and pipeline accidents.
• U.S. Department of Transportation - Oversees federal highway, air, railroad, and maritime and other transportation administration functions; components include the FAA, FHA, FRA, NHTSA, OIG, and STB. Site links to related agencies and organizations, safety resources, and current news.