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

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

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

Department of Transportation mandated that air traffic controllers rely on radar to manage aircraft flight paths, barring them from instructing pilots to avoid aircraft based on sight.

From Los Angeles Times • Mar. 26, 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