Policy
DOT's Notice on Testing for Marijuana
DOT OFFICE OF DRUG AND ALCOHOL POLICY AND COMPLIANCE NOTICE
On December 18, 2025, the President of the United States issued an Executive Order directing the...
Stop Human Trafficking
Resource Directorate and Program Directorate
The Resource Directorate serves as the focal point for resource oversight for the Office of the Under Secretary and the organizational offices; OST-P, OST-X, OST-Z, OST-F and OST-R offices. The Resource Directorate is a direct report of the Executive Director, S3. The Administrative...
Office of the Assistant Secretary for Aviation and International Affairs
The Office of Aviation and International Affairs is responsible for the analysis, development, articulation, and review of policies, programs, and plans for economic issues in domestic aviation and international transportation.
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Office of the Assistant Secretary for Transportation Policy (OST-P)
The Office of the Assistant Secretary for Transportation Policy is the office primarily responsible for recommending transportation policy initiatives to the Secretary, Deputy Secretary, and Under Secretary. In addition, the office coordinates initiatives that cut across modes. The...
Economic Strength: Creating reliable and efficient access to resources, markets and good-paying jobs
Investment in transportation infrastructure, such as roads, ports, railways, and public transit systems, facilitates the efficient movement of goods and people, reducing costs for businesses and individuals alike. Enhanced transportation networks can attract investment and spur economic...
Innovation: Lead the World by Bringing the Best of American Ingenuity to Transportation
USDOT will unleash American ingenuity by supporting innovation in fields like AI, automated vehicles, advanced air mobility and other emerging technologies. USDOT will reduce red tape and barriers to market entry for large and small American businesses, foster public-private collaboration...
Office of the Assistant Secretary for Multimodal Freight Infrastructure and Policy (OST-F)
The Office of the Assistant Secretary for Multimodal Freight Infrastructure and Policy is responsible for carrying out the national multimodal freight policy. The Assistant Secretary exercises executive direction over three subordinate offices:
Office of...
Office of the Assistant Secretary for Research and Technology (OST-R)
Administers the programs of the Office of the Assistant Secretary for Research and Technology (OST-R) and advises and assists the Secretary, Deputy Secretary, and the Under Secretary for Policy in matters pertinent to OST-R and its functions.
The Volpe National...