June 11, 2015
On May 26, PacTrans welcomed transportation professionals from Japan as part of an international exchange to share best practices in data, organizational collaboration, and road management. Kenji Saita, Assistant Manager, West Nippon Express Company (NEXCO), and Seishu Kitamura, Senior Researcher and Kzuhiko Makimura, Deputy Director, both of the Institute of Behavioral Sciences, visited the PacTrans STAR Lab to learn about the center’s work in intelligent transportation systems (ITS).
The group discussed the different types of traffic detectors employed by Washington State Department of Transportation (WSDOT) and those under development at the University of Washington, and ways to navigate the privacy concerns of data collection in Japan.
PacTrans, Washington State Transportation Center (TRAC), and WSDOT have a history of close collaboration. Doug Brodin, WSDOT Research Manager for ITS, Traffic and Congestion, and Freight, emphasized the importance of the long-term relationships with PacTrans and TRAC and considered it the key in the successful collaborative efforts between WSDOT and universities, which is visible in the many PacTrans intern students working in WSDOT.
Dr. Yinhai Wang, PacTrans director, highlighted the center’s interest in international collaborations and potential future partnership with NEXCO and IBS and the Japanese delegation responded very positively.
June 10, 2015
PacTrans joined University Transportation Center representatives from across the nation for the 2015 Council of University Transportation Centers Summer Meeting, June 1-4 in Brunswick, New Jersey. Held at Rutgers, the event brought transportation and university professionals and administrators together to share best practices and success stories to advance research, education, and development in the transportation field.
May 28, 2015
The PacTrans Region 10 Transportation Safety Workshop on May 5 drew representatives from universities, public agencies, and private companies across the Pacific Northwest to discuss important regional transportation safety issues. This workshop was jointly organized by PacTrans, ITE Washington, ITE Oregon, ITE Idaho, and ITE Alaska. Open only to invited participants, more than 70 attendees, both in-person and online, joined the workshop at the Talaris Conference Center to identify critical regional transportation safety issues for PacTrans to study. Regional transportation experts representing industry, agency, and university perspectives contributed to PacTrans’ research agenda, shared ongoing efforts in addressing critical safety problems, and solidified partnerships in transportation safety research and practice.
The morning sessions included keynote talks on transportation safety priorities at federal and state levels from Kenneth Feldman, Federal Transit Administration (FTA), and Chris Madill, Washington Traffic Safety Commission (WTSC), respectively. From a national standpoint, Feldman explained the FTA’s vision to make safe transportation safer and to see safety management systems (SMS) embedded in every transit agency. As executive director of WTSC, Madill outlined Target Zero, which aims for zero deaths and serious injuries on roadways by 2030, and highlighted key issues including motorcycles and pedestrians.
The transportation agency panel, moderated by Dongho Chang, City of Seattle, was comprised of representatives from Washington State Department of Transportation, Idaho Transportation Department, City of Portland, and Alaska Department of Transportation. Common threads throughout the panel included prioritization of decreasing vehicle run off the road crashes, communicating effective safety messages with the public, and the importance of enforcement.
Carlos Ortiz, ITE Western District President, moderated the ITE panel with representatives from the City of Seattle, Toole Design Group, and Leidos. While covering a range of topics, conversational themes emerged on more and better data for vulnerable users, such as bicyclists and pedestrians, and regulatory and societal trends with safety implications.
To address specific research and education needs, the final session placed participants into several working groups to concentrate separately on safe infrastructure, safe users, and safe operations. The safe operations group identified pedestrian risk locations and behaviors as a top priority, as well as acquiring data on speed, research on bicycle improvements, and collision data. Among the priorities outlined by the safe infrastructure group, effectiveness of measures to reduce collisions, a template for collection and analysis of collisions, implications of measures on all users, and high-tech solutions for managing risk to lifelines ranked in the top four. Finally, the safe users group cited defining the tipping point of bicycle usage, data acquisition, changing user demographics in transportation, and the notion of designing transportation facilities to elicit safer operating speeds as vital issues for research in the region.
With this information and support, PacTrans is equipped to continue investing in high-impact transportation safety research for the Pacific Northwest.
April 30, 2015
Dr. Imad Al-Qadi, an internationally renowned professor in pavement materials and engineering, visited the University of Washington on April 28 to speak at the Spring PacTrans Regional Transportation Seminar. Dr. Al-Qadi, Founder Professor at the University of Illinois at Urbana-Champaign, delivered his talk entitled “Transportation Infrastructure Assessment Techniques Using Ground Penetrating Radar.” (Watch the recorded lecture).
Continuous monitoring of transportation infrastructure allows for the maintenance of durable and safe systems. Ground penetrating radar (GPR) technology, based on electromagnetic waves, is an important non-destructive evaluation method, and yet GPR works better in some situations than in others. Bridge and pavement assessment, primarily for estimating layer thickness and localizing moisture accumulation within structure layers, has successfully used GPR.
However, the “images” obtained from GPR-reflected signals are dependent on the priori unknown dielectric properties of structural materials, which can make GPR data interpretation difficult. It can also prove difficult to detect layer interfaces, but signal and data processing techniques have been developed to estimate the dielectric properties of surveyed structures from GPR reflected signals. These techniques have improved GPR data interpretation and the quality of the GPR signal.
GPR provides quick and reliable information about subsurface characteristics when appropriately used. Pavement layer thickness can be accurately predicted, for example, as well as the location of rebar.
Dr. Al-Qadi has been working on GPR research for more than two decades, among his other diverse research interests. He is the Director of the Advanced Transportation Research and Engineering Laboratory (ATREL) and the founding Director of the Illinois Center for Transportation (ICT). A registered professional engineer, Dr. Al-Qadi has authored/co-authored more than 550 publications and has delivered more than 550 presentations, including numerous keynote lectures.
April 23, 2015
If you are unable to attend in person but would still like to hear the talk, the seminar will be broadcast for live viewing. Watch the seminar online at 9:30 a.m. PST.
The Pacific Northwest Transportation Consortium (PacTrans)
USDOT University Transportation Center for Federal Region 10
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 firstname.lastname@example.org or (206) 685‐6648.