PacTrans News

  • March 13, 2015

    Spring Regional Transportation Seminar: Dr. Imad Al-Qadi


    Organized by

    The Pacific Northwest Transportation Consortium (PacTrans)
    USDOT University Transportation Center for Federal Region 10

    Presentation Title

    Transportation Infrastructure Assessment Techniques Using Ground Penetrating Radar


    The continuous monitoring of transportation infrastructure is necessary to maintain a durable and safe system. Many noninvasive techniques have been used including instrumentation, acoustic emission, infrared, and electromagnetic waves.  Ground penetrating radar (GPR) technology based on electromagnetic waves has been used to assess the performance of transportation facilities for the past three decades. After all this time, the main question remains: “How well does GPR work and under what conditions?” Results show that while GPR works well for some situations, it is not appropriate for others. GPR has been successfully used for bridge and pavement assessment, primarily for estimating layer thickness and localizing moisture accumulation within structure layers. However, GPR data interpretation is often difficult because the “images” obtained from GPR-reflected signals are dependent on the priori unknown dielectric properties of structural materials. In addition, GPR cannot detect layer interfaces unless a significant contrast in the dielectric constants exists between the two considered materials. GPR data analysis can also be cumbersome and unreliable due to the large amount of data collected during the surveys. Various signal and data processing techniques have been developed to estimate the dielectric properties of surveyed structures from GPR reflected signals. These processing techniques have been successfully used to enhance the accuracy of GPR data interpretation results and to improve the quality of the GPR signal. Among his diverse research interests, Dr. Al-Qadi has been working on GPR research for more than two decades. He is currently working on utilizing GPR data to predict in-situ real-time asphaltic material density. Dr. Al-Qadi will discuss the recently developed techniques and their field application for quality control/quality assurance, predicting the layer thicknesses of pavement systems, detecting flaws, and predicting density of asphalt concrete.


    Professor Imad Al-Qadi is the Founder Professor of Engineering at the University of Illinois at Urbana-Champaign. He is also the Director of the Advanced Transportation Research and Engineering Laboratory (ATREL) and the founding Director of the Illinois Center for Transportation (ICT). Prior to that, he was the Charles E. Via, Jr. Professor at Virginia Tech. A registered professional engineer, Professor Al-Qadi has authored/co-authored more than 550 publications and has delivered more than 550 presentations including numerous keynote lectures. He has led more than 100 projects to completion. In addition, he is managing more than 60 projects annually as an ICT director since 2006. He is the past president of the ASCE T&DI Board of Governors and the Editor-in-Chief of the International Journal of Pavement Engineering. Professor Al-Qadi has received numerous prestigious national and international honors and awards including the NSF Young Investigator Award, the quadrennial IGS Award, the ASCE James Laurel Prize, the ARTBA Steinberg Award, the ASCE Turner Award, and the French Limoges Medal. He is a Chapter Honorary Member of Chi Epsilon at the University of Illinois, an Honorary Member of the Societa Italiana Infrastructure Viarie, Emeritus Member of TRB Committee AHD25 on Sealants and Fillers for Joints and Cracks, and an Honorary Professor at Southeast University in Nanjing, China, and KTH Royal Institute of Technology in Stockholm, Sweden. In 2010 he was elected as an ASCE Distinguished Member, the highest honor by ASCE, for his exemplary leadership and innovation in the civil engineering profession. Dr. Al-Qadi holds a B.S. degree from Yarmouk University and M.Eng. and Ph.D. degrees from Penn State University, all in civil engineering. His expertise are on highway and airfield pavement mechanics, tire loading, fracture, and interface, GPR, asphalt rheology, pavement sustainability, and forensic engineering and arbitration.

    For questions, please contact Maria Bayya, assistant director for PacTrans, at or (206) 685‐6648.

  • March 11, 2015

    PacTrans Board Meets, Plans for Upcoming Year

    The PacTrans Board of Directors (BOD) met at the end of February to discuss strategies, procedures, and implementation plans for the successful operation of the center in 2015 and beyond.  The full-day meeting covered a range of topics, from the eight-month extension of the PacTrans safety center to reporting procedures and the RFP process. The primary focus, however, was to develop an efficient procedure for research proposal solicitation, review, and decision.

    Many events are scheduled and in the planning phase for this year, including the PacTrans Regional Transportation Seminar on Innovation held on March 6, PacTrans Regional Transportation Safety Workshop on May 5, PacTrans sessions at the Traffic Safety Conference on October 15, and the 2015 PacTrans Regional Transportation Conference on October 16. The BOD also looks forward to supporting student leaders plan for the PacTrans Student Conference.


  • March 10, 2015

    DRIVE Net Offers Data Opportunities for Organizations

    On February 10, officials from Washington State Department of Transportation (WSDOT) met with PacTrans to discuss DRIVE Net, the Digital Roadway Interactive Visualization and Evaluation Network. WSDOT expressed interest in establishing DRIVE Net as the organization’s data management and analysis tool, and discussed system maintenance options with the STAR Lab research team. WSDOT’s Statewide Travel and Collision Data Office (STCDO) learned about data stored in DRIVE Net, and is willing to contribute more data to the system.

    DRIVE Net is an online platform for transportation data sharing, modeling, visualization, and decision support. Both WSDOT and PacTrans funding were received in developing the system.

    DRIVE Net

  • March 6, 2015

    PacTrans, WTSC Meet for Safety Workshop

    PacTrans and the Washington Traffic Safety Commission (WTSC) met on March 3 at the University of Washington to exchange information and learn more about the activities of each organization for potential collaboration. With transportation safety a primary goal, WTSC and PacTrans are strategically aligned and find partnerships with other agencies and organizations critical to developing safe solutions.

    Darrin Grondel, Director of WTSC, provided a background of the commission and discussed top programs and priorities. Guiding the commission’s priorities is Washington’ Strategic Highway Safety Plan, called Target Zero, which aims for zero deaths and serious injuries on roadways by 2030. The plan is formed through a collaboration of traffic safety professionals and organizations from a variety of disciplines, and preliminary conversation indicates a future contributing role for PacTrans.

    PacTrans WTSC meeting

    The workshop also provided a venue for PacTrans researchers to present their work in a wide range of safety-related topics. Dr. Anne Vernez-Moudon, Urban Design and Planning professor and PacTrans Associate Director of Education, presented her talk, “High-risk Locations of Pedestrian –motor-vehicle Collisions in King County: A Data-Driven Approach.” Her question to the group: what kind of cities do we make to support non-motorized, active transportation?

    Dr. Yinhai Wang, Civil and Environmental Engineering professor and director of PacTrans, gave an overview of transportation safety research at the PacTrans STAR Lab. Topics covered included the method for traffic safety data collection and quality control, mechanism-based accident models that include human factors in the analysis, and large scale highway safety analysis through DRIVE Net, the Digital Roadway Interactive Visualization and Evaluation Network.

    Dr. Qing Shen, Urban Design and Planning professor, discussed graduate student Peng Chen’s research on the risks of bicycle use in the urban environment. The study of bicycle routes, injuries, and bicycle-vehicle crash frequency lead to a discussion of preliminary policy implications, including the separation of bike lanes from roads and the avoidance of placing bike lanes on steep roads.

    Kris Henrickson, Civil and Environmental Engineering PhD student, discussed mobile MAC addressing and mobile platforms for crowdsourcing transportation safety data. Henrickson explained that collecting non-motorized transportation safety data is challenging, but ubiquitous mobile computing has made crowdsourcing possible and even affordable.

    Dr. Jessica Kaminsky, Civil and Environmental Engineering assistant professor, presented her talk, “Work Zone Safety and Social Network Analysis.” Stressing the importance of construction safety research, Dr. Kaminsky stated that construction-related work accounts for 16% of all occupational fatalities, and finds that safety communication is a cost effective way to decrease incidents on construction sites.

    This information sharing workshop generated a great deal of interest in further partnerships. Collaborative ideas were raised and discussed through a follow up lunch meeting. WTSC will participate in the PacTrans regional transportation safety workshop to be held in early May and bring in their top research issues with other local transportation agencies. PacTrans looks forward to working with these local transportation agencies to identify critical regional transportation safety problems and develop the corresponding research agenda for the years to come.

  • March 3, 2015

    Robert Stevens Delivers PacTrans Leadership Training Seminar

    “How many of you remember what made you decide you wanted to become an engineer?”

    For some, it was digging in the soil, for another it was an experience working on dams. A current University of Washington junior in civil engineering explained, “Every part of civil engineering is interesting – because no matter where you go, you get to play in the world’s biggest sandbox; it’s just what tools you want to play with.”

    Robert Stevens, ASCE President

    Dr. Robert Stevens, President of the American Society of Civil Engineers (ASCE), posed this question to students and professionals alike in his talk, “Engineering the Future,” on February 19. Using his own prolific career and involvement in ASCE as a springboard, Stevens discussed the outlook of civil engineering education and leadership development, and dispensed words of wisdom for young engineers still exploring their educational and professional path.

    Regarding the qualities required to excel in engineering leadership today, Stevens offered specific advice. “Participate. You’ve got to speak up. If you want to succeed, and by succeed, I mean have a career that you enjoy, you need… to work with other people,” said Stevens. “It comes from taking the risk and trying. When you’re asked to raise your hand, raise your hand. Get involved. Don’t be hearers, be participants.”


    Watch the “Engineering the Future” recorded webinar

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