Department of Transportation

Learn more about the Department of Transportation and how it supports investment in the United States

Seal of the Department of Transportation


The Department of Transportation (DOT) functions as the top federal agency in charge of keeping the traveling public safe and secure, increasing their mobility, and ensuring that the U.S. transportation system contributes to the nation's economic growth.

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Mission: To serve the United States by ensuring a fast, safe, efficient, accessible and convenient transportation system that meets our vital national interests and enhances the quality of life of the American people, today and into the future.

Investment-related Resources

Build America Bureau
The Build America Bureau (the “Bureau”) is responsible for driving transportation infrastructure development projects in the United States. The Bureau serves as the single point of contact and coordination for states, municipalities and project sponsors looking to utilize federal transportation expertise, apply for federal transportation credit programs and explore ways to access private capital in public private partnerships. 

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President Obama shakes the hand of a streetcar maintenance worker

Electric vehicle charging station

Office of Small and Disadvantaged Business Utilization (OSDBU)
The Office of Small and Disadvantaged Business Utilization (OSDBU) is responsible for ensuring that small businesses are treated fairly and have an opportunity to compete and be selected for a fair amount of the agency's contracting and subcontracting dollars.

Learn More About OSDBU