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

This is a long-standing trend — according to the Department of Transportation, for example, vehicle miles per gallon in the U.S. improved from about 13 mpg in 1975 to about 27 mpg in 2023.

From MarketWatch • May 5, 2026

Department of Transportation rule that gave them latitude to cancel.

From The Wall Street Journal • Apr. 22, 2026

To the east, the city’s Department of Transportation plaza is a fenced-off eyesore.

From Los Angeles Times • Apr. 11, 2026

American, which received a US Department of Transportation authorization in early March, said it was continuing to work with authorities in both countries.

From Barron's • Apr. 9, 2026

“The bowstring bridge at Delhi is next,” Joe Cassini said on a cellular phone to his boss at the Department of Transportation in Albany.

From "Frightful's Mountain" by Jean Craighead George