Office of the Assistant Secretary
Assistant Secretary, Vacant
Deputy Assistant Secretary, Vacant
Senior Advisor to the Secretary, Keith Nelson
Bureau of Transportation Statistics
Director, Patricia S. Hu
Deputy Director, Dr. Rolf Schmitt
Public Affairs Contact, David Smallen
Intelligent Transportation Systems Joint Program Office
Director, Kenneth Leonard
National Coordination Office, Space-Based Positioning, Navigation and Timing
Director, Harold W. "Stormy" Martin III
Office of Positioning, Navigation and Timing & Spectrum Management
Director, Karen Van Dyke
Office of Research, Development and Technology
Director, Dr. Kevin Womack
Office of Technology Policy and Outreach
Director, Timothy Klein
Transportation Safety Institute
Director, Dr. Kevin Womack
Senior Liaison, Christine Lawrence
John A. Volpe National Transportation Systems Center
Director, Anne D. Aylward
Deputy Director for Research & Technology, Dr. Steven M. Popkin
Deputy Director for Operations, Susan M. "Sue" Connors
Director, Center for Safety Management & Human Factors, Maura Lohrenz
Director, Center for Policy, Planning & Environment, Gregg Fleming
Director, Center for Infrastructure Systems & Technology, Luisa Paiewonsky
Director, Center for Air Traffic Systems & Operations, Gregory G. Joyner