Department of Transportation

American  

noun

1. the department of the U.S. federal government that coordinates and institutes national transportation programs. DOT

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Department of Transportation Cultural  

1. 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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Example Sentences

“The Department of Transportation doesn’t give preferential treatment to any person, organization, or entity at any time,” she said.

From The Wall Street Journal • May 14, 2026

Jet fuel costs for US airlines surged 56 percent in March from February and 30 percent from the year-ago period, the US Department of Transportation said this week.

From Barron's • May 9, 2026

He previously worked with the California Department of Corrections and Rehabilitation to teach incarcerated people how to become electricians, his website says, and last year joined the California Department of Transportation as an electrical engineer.

From Los Angeles Times • May 1, 2026

Department of Transportation have begun exploring replacing the existing funding structure with a simpler VMT tax that better aligns use with costs and better approximates the real price of roads.

From MarketWatch • Apr. 1, 2026

“There are a lot of other bridges. But the Department of Transportation says we do this one—now.”

From "Frightful's Mountain" by Jean Craighead George