Department of Transportation
- the department of the U.S. federal government that coordinates and institutes national transportation programs. Abbreviation: DOT
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Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Department of Transportation
A department of the federal executive branch responsible for the national highways and for railroad and airline safety. It also manages Amtrak, the national railroad system, and the Coast Guard.
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The New Dictionary of Cultural Literacy, Third Edition
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