OST-R's Key Officials

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
Shaz Umer, Director of Strategic Initiatives

Bureau of Transportation Statistics
Director, Vacant
Deputy Director, Rolf Schmitt, PhD
Public Affairs Contact, Ethan Alpern

Highly Automated Systems Safety Center of Excellence
Director, Taylor Lochrane, PE, PhD

Intelligent Transportation Systems Joint Program Office
Director, Brian Cronin

National Coordination Office, Space-Based Positioning, Navigation and Timing
Director, Harold W. "Stormy" Martin III

Positioning, Navigation and Timing & Spectrum Management
Vacant, Director

Office of Research, Development and Technology
Director, Dr. Firas Ibrahim

Office of Technology Policy and Outreach
Director, Timothy Klein

Advanced Research Projects Agency— Infrastructure
Deputy Director, Dr. Vincent Tang

Transportation Safety Institute (Oklahoma City, OK)
Director, Pete Kramer  (Acting) 

U.S. DOT John A. Volpe National Transportation Systems Center (Cambridge, MA)
Director, Gregg G. Fleming
Director for Research and Innovative Technology, Stephen M. Popkin, PhD 
Director for Operations, Dabney Kern
Director of Center for Policy, Planning, and Environment, Rachael Sack (Acting)
Director of Center for Safety Management and Human Factors, Stephen Popkin (Acting)
Director of Center for Infrastructure Systems and Technology, Chris Roof (Acting)
Director of Center for Communications, Navigation, Surveillance Systems, and Engineering, Jonathan Walker, PE, PhD 

Learn more about our activities