TTI Senior Research EngineerWork Zone & Dynamic Signs
Texas A&M Transportation Institute
1111 RELLIS Parkway, Room 4340
Bryan, TX 77807-3135
- Ph.D., Civil Engineering, Texas A&M University, 1995
- M.S., Civil Engineering, University of Nebraska, 1984
- B.S., Civil Engineering, University of Nebraska, 1983
Dr. Ullman has been a principal investigator or key researcher on over 70 different research studies pertaining to work zone safety and operations, dynamic message sign message design and applications, transportation management analysis of major freeway reconstruction projects, transportation management for incidents and major emergencies, and freeway operations and management. This research has been sponsored by several state departments of transportation, local transportation agencies, FHWA, NCHRP, and the private sector. He has published well over 170 refereed journal articles and technical reports, and has made over 90 presentations to audiences in the U.S., Canada, Qatar, and China. He is often sought out by the media for information and opinion regarding work zone safety and mobility-related topics. He has been quoted in such publications as USA Today, the Wall Street Journal, Traffic Technology International, and ITS International. He has been interviewed multiple times on the radio, and has also appeared in a Discovery Channel documentary Dangerous Jobs that focused on highway construction safety.
Dr. Ullman has been personally recognized for his research and service efforts. He is a past recipient of the Fred Burgraff Award from TRB, the TTI/Trinity Senior Researcher Award, and the TTI/Trinity Researcher Award. In 2012, he was named a Regents Fellow by the Texas A&M Board of Regents. Dr. Ullman is a member of the National Committee on Uniform Traffic Control Devices (NCUTCD) and is past chair of the TRB technical committee on work zone traffic control. He is also a member of ITE, and co-authored the traffic regulation and control chapter for the 1999 and 2009 ITE Traffic Engineering Handbooks. Dr. Ullman is a registered professional engineer in the state of Texas.