Department of Transportation(DOT)

Agency

Legal Definition of Department of Transportation 

federal executive division responsible for programs and policies relating to transportation. Besides the Federal Aviation Administration (q.v.) and the National Highway Traffic Safety Administration (q.v.), it controls the Federal Highway Administration (FHWA), which plans, develops, and oversees construction of interstate highways; the Federal Railroad Administration (FRA), which issues and enforces rail safety regulations and administers railroad financial assistance programs; the Federal Transit Administration (FTA), which manages mass transit development and improvement programs; the Maritime Administration (MARAD), which supervises the U.S. merchant marine; and various specialized regulatory, research, and development agencies, including offices for hazardous materials transportation and pipeline safety.

Learn More about Department of Transportation

Share Department of Transportation

Resources for Department of Transportation

Comments on Department of Transportation

What made you want to look up Department of Transportation? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

one that holds something together

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!