- An analysis of the effects of commuter rail on population deconcentration.
- A look into prioritizing pedestrians at signalized intersections.
- A study of cyclist-vehicle interaction.
- An evaluation of an eco-driving intervention.
Several notable transportation projects have come out of Portland State University’s Master of Urban and Regional Planning (MURP) program this spring.
Each year, graduating students finish up their two-year program of study by forming into groups and carrying out a professional project. Clients work with Portland State University to identify planning needs that would be a good fit for the MURP program, and students choose projects based on their interests.
The conference, organized by the Transportation Research Board, provides an opportunity for traffic monitoring professionals to share information about collecting and using traffic data.
Nordback will talk about what professionals can do to maintain bicycle count programs at the state level. She will give a presentation on the feasibility of using existing traffic signals to collect bicycle counts, and on what to do with that data once it is gathered.
Kothuri will present strategies for counting pedestrians using existing resources such as signal controllers and software already installed at intersections.Read more
Portland State University’s Master of Urban and Regional Planning (MURP) program matches students with clients every year to execute professional-level planning projects.
This spring, InSite Planning Group, a team of six MURP students, conducted a detailed corridor study for the city of Beaverton.
The ...Read more
Bicycle and pedestrian safety has emerged as a top priority for U.S. Transportation Secretary Anthony Foxx and the Department of Transportation. With this in mind, the department’s top research official visited Portland State University, home to the U.S. DOT-designated national center for livable communities.
Greg Winfree, the assistant secretary for research and technology, visited Portland State’s transportation research and education center June 13. Center Director Jennifer Dill and researcher Christopher Monsere gave Winfree a tour of the center’s living laboratory: Portland’s active transportation infrastructure.
Winfree, an advocate for improving safety for vulnerable road users, explored the city’s various bicycle safety efforts, including bike boulevards, protected bike lanes, bike boxes, bike-specific signals and signage. He also learned of pedestrian research involving traffic signals, crossings and modeling.
The tour highlighted research projects funded through U.S. DOT’...Read more
In a pilot study funded by the NITC Small Starts program, researchers explored whether drivers behave differently toward pedestrians waiting to use a crosswalk based on the pedestrian’s race. The study – the first examining the effects of race on pedestrian crossing experiences – found that black pedestrians were passed by twice as many cars and waited nearly a third longer to cross than white pedestrians.
Minorities are disproportionately represented among pedestrian fatalities in the United States. The Center for Disease Control reported in 2013 that in the first decade of this century, the fatality rates for black and Hispanic men were twice as high as they were for white men.
Researchers Kimberly Barsamian Kahn and Tara Goddard of Portland State University, and Arlie Adkins, of the University of Arizona, hypothesized that if minority pedestrians experience more delay at crosswalks, they might take greater risks when crossing – risks that could contribute to the disparate fatality rates.
Kahn, an assistant professor of social psychology, studies contemporary forms of racial bias that are hidden within society. Working with Goddard and Adkins, who were interested in the social equity impacts of transportation, Kahn put together a controlled field experiment to measure...
OTREC research from Portland State University has developed a new method of travel demand modeling for pedestrian trips.
Transportation professionals use travel demand modeling to forecast how many people will be using a given portion of the transportation infrastructure. This is typically done using a four-step process, the first step of which relies upon a basic unit known as a transportation analysis zone, or TAZ.
A TAZ is a relatively coarse unit of space that can vary in size depending on planners’ needs; typically it encompasses somewhere around 3,000 residents.
Planners started using TAZs in the 1950s, on mainframe computers with limited capabilities, for guidance in making highway investment decisions. As transportation modeling practice has evolved, computers are capable of processing more data and models are being increasingly relied upon to answer more complex questions.
Despite growing investment in infrastructure that supports active forms of travel, existing modeling tools often poorly represent the nuances of the pedestrian environment. The project’s principal investigator, Kelly Clifton of Portland State University, explores ways to improve upon the modeling tools currently in existence.... Read more
OTREC researcher Miguel Figliozzi details some of the work on an Oregon Department of Transportation project, "Design and Implementation of Pedestrian and Bicycle Specific Data Collection Methods in Oregon," in this video produced by the Federal Highway Administration.
The project reviewed collection methods such as tube counters and loop detectors for accuracy and looked at using count numbers to deterimine average annual pedestrian and bicycle traffic at intersections.
Figliozzi was lead researcher on the project, with Christopher Monsere. Both are associate professors of civil and environmental engineering at Portland State University.
OTREC's Krista Nordback was also involved in the project, as were graduate students Pamela Johnson and Bryan Blanc. More information on the project is at:
The Initiative for Bicycle and Pedestrian Innovation has unveiled the most ambitious year of professional development offerings in its history.
For the first time, the schedule includes Webinars, with the first taking place Feb. 27. Offerings also include courses and workshops geared toward practitioners and university faculty members. There’s also a two-week study abroad opportunity to learn about sustainable transportation in the Netherlands.
The course offerings include a newly added advanced bicycle design and engineering workshop. The workshop is geared toward professionals who have taken the original IBPI course or who serve communities with a developed bicycle network.
“More than 120 professionals have taken the course since 2008,” said Hau Hagedorn, who manages the IBPI program. “We’ve reached the threshold of educating professionals where there’s the need to take this to the next level of expertise.”
Continuing education credits are available for each workshop and Webinar. Click here for details on the individual course pages.
Registration is now open for IBPI’s inaugural Webinar on Feb. 27: “We are Traffic: Creating Robust Bicycle and Pedestrian Count Programs.” As agencies looking to improve bicycle and pedestrian infrastructure have learned, it doesn’t count if it’s not counted....Read more
Note: In advance of the Transportation Research Board's annual meeting, the biggest forum on the transportation research calendar, OTREC.us is profiling some of the researchers who will present their work.
How long is too long to wait for the light to change? At stoplights, pedestrians often experience longer delays while cars are given priority.
To design traffic signals that serve the needs of walkers, planners must understand the motivations behind pedestrian behaviors.
Working with professors Kelly Clifton and Christopher Monsere, Sirisha Kothuri of Portland State University created a survey designed to shed some light on what makes pedestrians decide to follow, or not follow, traffic laws.
To collect data, Kothuri and a team of graduate students armed with an 11-question survey posted themselves at four different intersections in northeast Portland, Ore.
Two of the intersections had recall signals, where pedestrians are automatically detected, and the other two had actuated signals, where pedestrians must press a button to get the light to change.
Survey respondents were asked for their attitudes about delay in signal timing, and for the reasons that determined their crossing the street.
Responses showed that pedestrians were more content with...Read more