Portland State University researchers have received funding for five new transportation research projects via the National Institute for Transportation & Communities (NITC), a research consortium funded by the U.S. Department of Transportation and led by Portland State. The projects listed below have been awarded to PSU faculty along with some inter-university collaborators, and will investigate a range of topics from leveraging advanced technology to create smart transportation systems to improving universal access and equity:
Travel time reliability is a key metric of interest to practitioners and researchers. This project will evaluate and develop methods to determine confidence intervals and hypothesis tests for select travel time reliability parameters. The researchers will also study the applicability of existing travel time reliability metrics for class one vehicles (bicycles and motorbikes) and the feasibility of defining an overall travel time reliability of an arterial segment that considers all modes.
Last year, Portland State University’s Transportation Research and Education Center (TREC) released a 130 page evaluation comparing equity-oriented programs from over 70 U.S. bike share systems across the U.S. Bike share being a relative newcomer to the transportation system, the research team was not surprised to find that approaches to equity programs ranged widely. In the latest installment, funded by the Better...Read more
Jaime Orrego-Oñate, a civil engineering PhD candidate at Portland State University (PSU), has been awarded a $15,000 Oregon Sylff Fellowship for International Research. As a Chilean national completing a Ph.D. in transportation engineering at PSU, Jaime is poised to promote the expansion of American research abroad into countries that lack research resources. His research focuses on understanding the role of the urban form in active transportation decisions. With his work, he hopes to address an information gap between pedestrians’ motivations to walk and how urban planners can encourage this behavior. This is of particular importance in the context of Jaime's home region, Latin America, where walking has been decreasing due to the rise of use of private automobiles.
"I want to spearhead positive change by convincing societies like mine that they can improve urban development," Orrego-Oñate said.
The Sylff program aims to identify and nurture leaders who will overcome differences in nationality, language, ethnicity, religion, and political systems to tackle global issues, and whose high integrity and drive to address issues unique to their respective countries can make a real difference....Read more
The new article Evidence from Urban Roads without Bicycle Lanes on the Impact of Bicycle Traffic on Passenger Car Travel Speeds published in Transportation Research Record, the Journal of the Transportation Research Board, demonstrates that bicycles do not significantly reduce passenger car travel speeds on low speed, low volume urban roads without bicycle lanes. Authored by Jaclyn Schaefer, Miguel Figliozzi, and Avinash Unnikrishnan of Portland State University, the research shows that differences in vehicle speeds with and without cyclists were generally on the order of 1 mph or less – negligible from a practical perspective.
A concern raised by...Read more
Electric bikes (e-bikes) are quickly becoming common in U.S. cities and suburbs, but we still have a ways to go compared to our neighbors across the Atlantic. In recent years, e-bike sales have steadily increased with unprecedented growth in Europe, especially in the Netherlands. Can the U.S. catch up? E-bikes offer a cheaper alternative to car travel and also provide physical activity. Riders with limited physical ability find that e-bikes extend their overall mobility. Beyond the practical, e-bikes are also just fun to ride. In fact, e-bikes encourage users to cycle farther and more often than conventional bicycles. More importantly to local and regional U.S. governments, e-bikes could be a useful tool to address our current climate crisis by reducing transportation greenhouse gas (GHG) emissions.
Related research: MacArthur and McQueen are also...Read more
- Watch a video interview with Kelly Clifton, published Thursday, June 11 from KATU: PSU and UO researchers study how coronavirus pandemic is impacting consumers
Authored by Tammy Lee, Transportation Data Manager, Portland State University
Traditionally, the month of May is Bike to Work Month. Last year this time, Oregon logged 179,177 trips for a total of 1,374,835 miles by 10,397 riders. And last year this time TREC was winning the PSU bike to work month department challenge. So what are we seeing in the data now?
For continuity from the last time we posted some bike volume observations, we’re again showing data from the Hawthorne Bridge and Tilikum Crossing (Figure 1) in Portland, Oregon. At the moment, daily volume across the Hawthorne Bridge remains relatively low. Typically we’d expect bike volumes across the Hawthorne would be higher in May, especially because if this were “normal” times we’d be competing in the Bike to Work Month challenge. Bike volumes across the Tilikum show higher volumes beginning in April, especially on the weekends since the March 23, stay-at-home order was issued.
- Download the Final Report (PDF)
- Download the Project Brief (PDF)
- Watch the June 2 Webinar: Findings From 15 Years Of Travel Surveys At Portland Area Transit-oriented Developments (TODs)
Does living in a transit-oriented development (TOD) actually change the way people travel? That's the fundamental question that 15 years of research in Portland, Oregon seeks to answer.
Since 2005, Portland State University has worked with Portland’s Metro regional government to survey occupants of buildings for which developers had received funding from...Read more
Each year, through our Initiative for Bicycle and Pedestrian Innovation (IBPI) program, TREC offers a range of scholarships to assist students pursuing equitable, sustainable, and multimodal transportation. Four Portland State University students were awarded TREC scholarships for the 2020/2021 academic year: Darshan Chauhan of civil & environmental engineering, and Robert Hemphill, Philip Longenecker and Briana Orr of urban studies & planning.
Darshan Chauhan (Walter H. Kramer Fellowship)
Darshan Chauhan (see his NITC student spotlight here) is a graduate research assistant in civil engineering at Portland State University. He has served as the treasurer of STEP (Students in Transportation Engineering and Planning), PSU's transportation student group, and generously volunteers his time at a variety of transportation-related events via PSU's Transportation Research and Education Center (TREC). He defended his masters thesis on network flow problems in fall 2019, and is now a PhD student in the civil engineering...Read more
The rapid spread of COVID-19 has changed the way most of the world moves through daily life, with many businesses having to temporarily close and students of all levels forced to transition to online courses.
Even so, grocery stores, medical facilities, and takeout restaurants remain open, requiring workers to commute to and from work. In metro areas, that can often mean taking some form of transit, potentially exposing workers in these vital areas to the disease.
In a collaborative project between University of Tennessee at Knoxville and Portland State University, researchers Chris Cherry (UT), Candace Brakewood (UT) and John MacArthur (PSU) are studying the impacts of people’s travel decisions on transit, shared bikes and e-scooters, and it comes with backing from a National Science Foundation RAPID Award.
These awards are granted for research with "a severe...Read more
Authored by PeopleForBikes -...Read more