Supply Chain Management

America's freight railroads operate the safest, most efficient, cost-effective and environmentally sound freight transportation system in the world — and at the Association of American Railroads (AAR) we are committed to keeping it that way.

The National Transportation Safety Board (NTSB) is an independent federal agency charged with determining the probable cause of transportation accidents, promoting transportation safety, and assisting victims of transportation accidents and their families.

Dedicated to achieving the highest standards of excellence in motor vehicle and highway safety, NHTSA works daily to help prevent crashes and their attendant costs, both human and financial.

As part of the National Academies of Sciences, Engineering, and Medicine, the Transportation Research Board (TRB) mobilizes expertise, experience, and knowledge to anticipate and solve complex transportation-related challenges.

As the DOT agency responsible for America's waterborne transportation system, the Maritime Administration (MARAD) is busy. At our core, we support the technical aspects of America's maritime transportation infrastructure -- things like ships and shipping, port and vessel operations, national security, environment, and safety

The Bureau of Transportation Statistics (BTS), part of the Department of Transportation (DOT) is the preeminent source of statistics on commercial aviation, multimodal freight activity, and transportation economics, and provides context to decision makers and the public for understanding statistics on transportation