Ph.D., University of Texas at Austin, 1984
M.S., University of Texas at Austin, 1981
B.S., University of Texas at Austin, 1980
Areas of Expertise: Managed Lanes and Roadway Pricing, Road User Costs, Fuel Consumption and Emissions Modeling, Traffic Flow Theory, Public Transportation Design, and Emergency Transportation Management (e.g. detours, evacuations, and management of post-disaster operations).
Background: Dr. Ardekani joined UT Arlington in September 1989. Prior to that he was on the faculty at Virginia Tech for four years. He teaches undergraduate courses in transportation engineering, traffic engineering, and highway design as well as graduate courses in traffic characteristics and operations, traffic flow theory, transit planning, geometric design, and transportation planning. His areas of research have included Emergency transportation operations following the 1985 Mexico City and the 1989 San Francisco earthquakes, assessment of the quality of traffic service in urban networks, audible pedestrian signals for the blind, guidelines for left-turn traffic signals, economic evaluation of toll plaza operations, modeling vehicular fuel consumption, planning for intelligent transport systems in Texas, mitigation of roadway hazards for bicyclists, and decision tools for traffic diversion around major incidents. Dr. Ardekani has also been a consulting engineer for several field projects on traffic signal timing and hardware design, including the design of the signal system in Leon, Mexico. He is a registered Professional Engineer in Texas and Virginia.
Dr. Stephen P. Mattingly
Ph.D., University of California, Irvine, 2000
M.S., University of Texas at Arlington, 1994
B.S., Rice University, 1991
Area of Expertise: Decision and Risk Analysis (AHP, Multiattribute, Multiobjective techniques), Institutional Studies and Analysis, Transportation Planning, Operations Research/Logistics, Stochastic and Statistical Analysis (Aggregate/disaggregate models), Network Optimization (Linear and nonlinear), Intelligent Transportation Systems, Traffic Engineering, Public Transit, Bicycle and Pedestrian Behavior and Safety and Transportation Safety.
Background: Dr. Mattingly joined UT Arlington in September 2002. Prior to joining UTA he served on the faculty at the University of Alaska, Fairbanks (UAF) for two and a half years, and also served as a lecturer at the University of Southern California. He teaches undergraduate courses in transportation engineering and transportation planning as well as graduate courses in analytical models in transportation, system evaluation and decision making, transportation network analysis, transportation planning and bicycle and pedestrian facility planning and design.
While at UAF, Dr. Mattingly helped found the FAA Air Transportation Centers of Excellence Program: Center for General Aviation Research. Dr. Mattingly’s areas of research include a wide variety of projects. The state funded research projects include work on evaluating guardrail end terminals and their survivability during snow removal activities, evaluating overheight detection devices, projecting statewide planning changes in multi-modal transportation demand and system needs, institutional approaches for interjurisdictional system management and detection and mitigation of roadway hazards for bicyclists. The federally-funded projects include evaluation of the Anaheim advanced traffic control system field operational test: evaluation of SCOOT performance and assessment of institutional issues, documenting the institutional issues associated with the Irvine integrated corridor freeway ramp metering and arterial adaptive control field operational test, impacts of the Northridge Earthquake on traffic network performance, categorizing factors influencing transit usage among tourists and non-tourists, and developing a security plan for general aviation.
Dr. Mattingly is a member of TRB, ITE and ASCE. He has published several articles in Transportation Research Record and International Conferences on Decision-Making in Urban and Civil & Environmental Engineering.
Ph.D., University of Texas at Austin, 1986
M.S., University of New Mexico, 1977
B.S., University of New Mexico, 1976
Areas of Expertise: Traffic flow theory, traffic engineering, operation of traffic signal systems, highway and street capacity analysis, freeway operations analysis, and transportation systems analysis.
Background: Dr. Williams worked for the Texas Department of Transportation as a traffic engineer in the headquarters offices in Austin (1978-1982). There his work included design and operation of small computer-controlled traffic signal systems as well as isolated signals, freeway capacity studies, freeway control analysis (including ramp metering), and highway signing.
Since then, his research activities have included work in traffic flow theory at the network level, ranging from the theoretical development of network flow models to an assessment of the effect of traffic control on the quality of traffic service provided by the network. Dr. Williams is also involved in traffic operations research, having investigated motorist understanding of left turn indications at signalized intersections, the effects on delay and safety of traffic signals at low volume intersections, and the implementation of Intelligent Transportation Systems (ITS) for the Texas Department of Transportation.
Dr. Williams has been most recently involved in projects to determine the capacity and level of service of weaving areas on freeways, and the development of a tolling model to maintain desired flow characteristics on a facility with general purpose and high occupancy/toll (HOT) lanes.
Recent and Current Research Studies
Ongoing and recent research studies conducted by the Transportation faculty include:
1. Effect of Pavement Type on Fuel Consumption and Emissions, Sponsored by the Ready Mixed Concrete Research & Education Foundation.
2. An Assessment of Frontage Road Yield Treatment Effectiveness, Sponsored by the Texas Department of Transportation, Joint with the Texas Transportation Institute.
3. Using Operations-Oriented Performance Measures to Support Freeway Management Systems, Sponsored by the Texas Department of Transportation, Joint with the Texas Transportation Institute.
4. Accelerating Response to Roadway Incidents in Conjunction with the Integrated Corridor Management Program in the Greater Dallas Area, Sponsored by the Dallas Area Rapid Transit.
5. Regional Transportation Council Aftermarket Technology and Fuel Additive Research Program, Sponsored by the North Central Texas Council of Governments.
6. On-Road Measurement of Air Quality Benefits: Traffic Signal Improvements, Sponsored by TARC.
7. The Role of Preferential Treatment for Carpools in Managed Lane Facilities, Sponsored by the Texas Department of Transportation, Joint with the Texas Transportation Institute.
8. Development of Guidelines for Ramp Reversal Projects, Sponsored by the Texas Department of Transportation, Joint with the Texas Transportation Institute.
9. Developing a Comprehensive Pricing Evaluation Model for Managed Lanes, Sponsored by the Texas Department of Transportation.
10. A Sensor for Remote Detection of Alcohol Vapors, Sponsored by the Texas Higher Education Coordinating Board.