Tim Lomax, Ph.D., PE

TTI Research Fellow
Regents Fellow

Education

• Ph.D., Civil Engineering, Texas A&M University, 1987
• M.Eng., Civil Engineering, Texas A&M University, 1982
• B.S., Civil Engineering, Texas A&M University, 1979

Short Biography

Dr. Lomax has been extensively involved in urban mobility research for more than 35 years.  He developed and applied a methodology to assess areawide traffic congestion levels and congestion costs.  The Urban Mobility Scorecard examines trends in U.S. urban area mobility and documents the effect of transportation investments.  A related pooled-fund research project has developed several performance measures and analytical techniques to describe mobility to a wide range of audiences including transportation professionals, public policy decision-makers, the media and the general public. 

Dr. Lomax has also been involved in developing and evaluating a wide range of solutions to mobility problems, including high-occupancy vehicle facilities, and in improving decision-making processes and performance measurement.  He has also played a role in regional and statewide congestion analyses and in developing principles and performance measures to evaluate and communicate solution strategies.  These studies assisted the public agencies and business community in Atlanta and Houston to develop a process to estimate congestion levels, identify cost-effectiveness analysis procedures and the effect of a range of mobility improvement strategies.  He was the lead researcher in a project to examine the benefits of transportation improvements and the cost of addressing congestion in major Texas metropolitan regions for the Texas Governor’s Business Council and a joint working group of Texas DOT and Metropolitan Planning Organizations. 

He has been invited to make presentations on congestion, mobility and performance measure issues to a variety of groups including the Transportation Research Board, the Institute of Transportation Engineers and state and local governments in the U.S.  He has testified before subcommittees of the U.S. and Texas House of Representatives and Senate on mobility issues.  He has appeared on radio and television network news shows and many newspapers, radio and television stations in major cities covered in the mobility report.