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Proponents of advanced bikeways will point out a growing body of research on these facilities’ safety and benefits for cycling. They can now add another benefit: higher home values.

Research led by Jenny Liu of Portland State University looked at property around advanced bikeways in Portland, defined as bicycle boulevards, protected bike lanes and buffered bike lanes. She found positive effects on property values close to one of these bikeways and an even stronger effect where the network was denser.

Liu presents her research Wednesday at the annual meeting of the Transportation Research Board in Washington, D.C. Learn more or download the research paper.

For single family home sales, being a quarter mile closer to an advanced bikeway translated to a $686 premium, while increasing the density by a quarter mile represented a $4,039 premium. For multi-family homes, the effect of being close to a bikeway wasn’t statistically significant on sale price, but increasing the density of bikeways translated to $4,712 of value.

The research can inform policymakers who may question how much residents value bikeways and provide insight into siting decisions. “My results don’t...

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Saddling transit-oriented developments with parking requirements better suited to typical suburban developments can make housing and office space near transit scarce and overly expensive. That’s one implication of a NITC research report examining driving and parking at these centers.

It makes sense that transit-oriented developments—dense, walkable centers close to transit that combine residential, commercial and office uses—would generate fewer car trips and need less parking than other development types. But until now, no one has found out how much less parking.

NITC researcher Reid Ewing of the University of Utah took up the challenge and reveals the answer in a report: a lot less. The developments Ewing’s team studied generally generated less than half the driving, and required fewer than half the parking spaces, than standard guidebooks predict. They presented some of their findings Jan. 10 during the annual meeting of the Transportation Research Board in Washington, D.C. Learn more about the conference or download the paper.

Ewing’s team studied transit-oriented developments in five United States metropolitan areas and found the...

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Tara Goddard, a doctoral candidate in the Nohad A. Toulan School of Urban Studies and Planning at Portland State University, has been selected as the 2016 NITC university transportation center student of the year.

NITC takes pride in the development of tomorrow’s transportation leaders, involving students in research and supporting student transportation groups.

Goddard is the 11th student of the year since Portland State established its university transportation center in 2006. She is being recognized at the Council of University Transportation Centers 2017 Annual Awards Banquet in Washington, D.C., where she's also attending the Transportation Research Board annual meeting.

Goddard’s dissertation research explores drivers’ attitudes and behaviors toward bicyclists. This reflects her broader interest in the intersectionality between transportation and the social sciences, and how professionals in both disciplines can work together to improve upon public spaces and the ways that people interact within them.

This research focus comes with exciting opportunities for future work, a future which is still being determined: Goddard has applied for academic positions in different parts of the world and is waiting to hear what country she will be living in next year. Meanwhile, she is staying busy.

“I am vigorously trying to wrap up my PhD in the next two months, and...

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The final report on this research is available now: Design for an Aging Population

Published in April 2017, this study sought to increase understanding of the obstacles faced by people with impairments in vision, hearing and/or mobility, which are common issues for older people, and generate physical product solutions.

The research shows that aging riders face conceptual, physical and social barriers that impact their willingness to use buses. Using the bus was seen as inconvenient, time consuming, physically draining and potentially frustrating. Priority seating areas designated for older and disabled users fill quickly. People with mobility challenges may use bulky walkers and require the availability of grab bars, and users of wheeled mobility devices need different device security. Several situations noted in the study show that physically challenged riders are subject to awkward, uncomfortable social dynamics more than other bus users. Innovation in easy access seats and secure WhMD stations at the front of the bus are critical for older users, as it makes riding the bus less draining and more safe.

This research was presented at TRB's 2017 annual meeting. See below for our coverage of the research at TRB.


Seniors make up a...

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Sunday, the first day of the Transportation Research Board annual meeting in Washington, D.C., is workshop day. Portland State University doctoral student Tara Goddard presents in a showcase of research stemming from the prestigious Dwight D. Eisenhower Transportation Fellowship program.

Goddard probed the question of why so many bicyclists die in traffic crashes. Cyclists are 12 times more likely to be killed in a crash than a driver or passenger in a car. She wondered what role drivers' attitudes toward cyclists might play.

Goddard's research uses a survey to measure drivers' attitudes and self-reported behaviors and to test drivers' implicit attitudes toward both other drivers and cyclists. She pairs the survey piece with a lab experiment that uses hazard-perception video clips to examine whether drivers notice cyclists. 

By this approach, Goddard hopes to understand drivers' attitudes and whether those attitudes can predict how they act on the road. That understanding can potentially lead to steps to improve cyclist safety. Her workshop runs 9 a.m. to noon in Room 202B of the Walter E. Washington Convention Center.

Disaster recovery workshop

John MacArthur of TREC presents "Smart, Shared and Social: Enhancing All-Hazards Recovery Plans With Demand...

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Last month, the U.S. Department of Transportation released an ambitious plan to make sure the public has access to federally funded research. The plan could have far-reaching effects both inside the department and with organizations such as states, universities and contractors.

To help the transportation community sort out implications of the plan, two Transportation Research Board standing committees—Library and Information Science for Transportation and Conduct of Research—are sponsoring a workshop Sunday during the TRB annual meeting. The workshop, from 1:30 to 4:30 p.m., will offer background, plan details and training on the new requirements along with best-practice case studies.

Although the plan includes many exceptions, it represents a big step toward the goal of making publicly funded research available to the public, said Kendra Levine, co-chair of the LIST committee and research librarian at the University of California Berkeley’s Institute of Transportation Studies Library

In the past, it hasn’t always been clear...

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Traffic congestion on urban roadways can influence operating costs and cause travel delays.

Portland State University master’s students Nicholas Stoll and Travis Glick will present a paper introducing solutions for locating the sources of congestion at the 2016 annual meeting of the Transportation Research Board.

With their faculty advisor, Miguel Figliozzi, Stoll and Glick looked into using bus GPS data to identify congestion hot spots.

By using high-resolution GPS data to visualize trends in bus behavior and movement, the researchers were able to examine the sources of delay on urban arterials.

These visualizations, which can be in the form of heat maps or speed plots like the one shown here on the right (an application of numerical method applied to a 2,000 ft segment of SE Powell), can be used by transportation agencies to identify locations where improvements are needed. For example, adding a queue jump lane at a congested intersection can improve flow.

The researchers used fine-grained bus data provided by TriMet to create the visualizations. Buses have been used as probes to estimate travel...

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Content Type: Professional Development Event

The video begins at 3:22.

Steve Gehrke (CEE PhD) - Application of Geographic Perturbation Methods to Residential Locations in the Oregon Household Activity Survey: Proof of Concept

Travel demand models have advanced from zone-based methods to favor activity-based approaches that require more disaggregate data sources. Household travel surveys gather disaggregate data that may be utilized to better inform advanced travel demand models and also improve the understanding of how nonmotorized travel is influenced by a household’s surrounding built environment. However, the release of these disaggregate data is often limited by a confidentiality pledge between the household participant and survey administrator. Concerns regarding the disclosure risk of survey respondents to household travel surveys must be addressed before these household-level data may be released at their disaggregate geography. In an effort to honor this confidentiality pledge and facilitate the dissemination of valuable travel survey data, this research: (i) reviews geographical perturbation methods that seek to protect respondent confidentiality; (ii) outlines a procedure for implementing one promising practice, referred to as the donut masking technique; and (iii) demonstrates a proof of concept for this technique on ten respondents to a household activity travel survey in the Portland metropolitan region. To examine the balance...

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