Leadership and Key Officials
The Office of the Under Secretary comprises multiple offices with a broad range of functions and missions, including domestic and international transportation policy development and implementation, economic and legislative analysis, regulatory oversight, credit assistance, and innovative financing opportunities.
Vacant, Acting Under Secretary and Assistant Secretary for Transportation Policy
Loren Smith, Deputy Assistant Secretary
Dan Edwards, Principal Deputy Assistant Secretary for Aviation and International Affairs
Jared Smith, Deputy Assistant Secretary for Aviation and International Affairs
Cindy Baraban, Deputy Assistant Secretary for Aviation and International Affairs
Vacant, Deputy Assistant Secretary
Felicia Alexander, Deputy Assistant Secretary
Michael Halem, Principal Deputy Assistant Secretary for Research and Technology
Lee White, Deputy Assistant Secretary for the Office of the Assistant Secretary for Research and Technology
Michael Rutherford, Assistant Secretary for Multimodal Freight Infrastructure and Policy
Cathy Gautreaux, Deputy Assistant Secretary for Multimodal Freight Infrastructure and Policy
Michael Halem, Principal Deputy Assistant Secretary for Research and Technology
Maria Lefevre, Executive Director, Under Secretary for Policy
Dr. Morteza Farajian, Executive Director, Build America Bureau
Vacant, Labor Policy Advisor
Vacant, Chief Competition Officer
Loren Smith, Deputy Assistant Secretary for Transportation Policy
Felicia Alexander, Deputy Assistant Secretary
Vacant, Principal Deputy Assistant Secretary
Vacant, Deputy Assistant Secretary
Juli Huynh, Director, Policy Coordination and Development
Darren Timothy, Director, Office of the Chief Economist
Marilyn Shazor, Senior Policy Advisor for Transportation Policy
Christopher Yablonski, Senior Advisor
Michael Giordano, Senior Advisor
Stephen Walling, Safety Policy Advisor
Dan Edwards, Principal Deputy Assistant Secretary for Aviation and International Affairs
Jared Smith, Deputy Assistant Secretary for Aviation and International Affairs
Cindy Baraban, Deputy Assistant Secretary
Julie Abraham, Director, Office of International Transportation and Trade
Benjamin Taylor, Director, Office of International Aviation
Todd Homan, Director, Office of Aviation Analysis
Peter Irvine, Deputy Director, Office of Aviation Analysis, and Executive Lead for Aviation Policy
Dr. Morteza Farajian, Ph.D, Executive Director, Build America Bureau
Duane Callender, Director, Credit Programs
Vacant, Director, Outreach and Project Development
Vacant, Director, Technical Assistance
Rosalyn G. Millman, Senior Advisor to the Executive Director
Dimitri Kombolias, Business Operations Manager
Office of the Assistant Secretary
Vacant, Assistant Secretary for Research and Technology
Michael Halem, Principal Deputy Assistant Secretary for Research and Technology
Lee White, Deputy Assistant Secretary for Research and Technology
Seval Oz, Senior Advisor
Shaz Umer, Director of Strategic Initiatives
Bureau of Transportation Statistics
Director, Vacant
Rolf Schmitt, PhD, Deputy Director
Ethan Alpern, Public Affairs Contact
Highly Automated Systems Safety Center of Excellence
Taylor Lochrane, PE, PhD, Director
Intelligent Transportation Systems Joint Program Office
Brian Cronin, Director
National Coordination Office, Space-Based Positioning, Navigation and Timing
Harold W. "Stormy" Martin III, Director
Positioning, Navigation and Timing & Spectrum Management
Vacant, Director
Office of Research, Development and Technology
Dr. Firas Ibrahim, Director
Office of Technology Policy and Outreach
Timothy Klein, Director
Advanced Research Projects Agency— Infrastructure
Dr. Vincent Tang, Deputy Director
Transportation Safety Institute (Oklahoma City, OK)
Pete Kramer, Acting Director
U.S. DOT John A. Volpe National Transportation Systems Center (Cambridge, MA)
Gregg G. Fleming, Director
Stephen M. Popkin, PhD, Director for Research and Innovative Technology
Dabney Kern, Director for Operations
Cynthia Maloney, Acting Director of Center for Policy, Planning, and Environment
Stephen Popkin, Acting Director of Center for Safety Management and Human Factors
Chris Roof, Acting Director of Center for Infrastructure Systems and Technology
Jonathan Walker, PE, PhD, Director of Center for Communications, Navigation, Surveillance Systems, and Engineering
Michael Rutherford, Assistant Secretary for Multimodal Freight Infrastructure and Policy
Cathy Gautreaux, Deputy Assistant Secretary for Multimodal Freight Infrastructure and Policy
Vacant, Director for Multimodal Freight
Paul Baumer, Acting Deputy Director for Multimodal Freight Infrastructure
Chandra Bondzie, Deputy Director for Multimodal Freight Operations