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

See Examples For:

Department of Transportation

Back in Washington, the Department of Transportation concluded that this laissez-faire attitude had to change, and began high-level discussions with the nation’s aviation executives.

From Slate ● Jul. 7, 2026

The closure is expected to last until 3 p.m. as Southern California Edison crews work to repair the downed pole, the California Department of Transportation announced in a social media post.

From Los Angeles Times ● Jul. 6, 2026

The research was funded by the Hawaii Department of Transportation.

From Science Daily ● Jun. 28, 2026

The Arizona Department of Transportation is widely seen as having a more welcoming regulatory environment for autonomous trucking companies than other states.

From The Wall Street Journal ● Jun. 8, 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