Streetcar_people_alphabet National Geographic recently described Portland as the City that “…gets almost everything right; it’s friendly, sustainable, accessible, and maybe a model for America’s future” (Cover story, Dec. 2009). Portland has a shared vision of a livable city, articulated in many different ways. It is seen in neighborhood self-help projects, big municipal investments, enlightened developers that build infill projects consistent with city plans, and the highest recycling participation rate in the country.  Taken together Portland is a city that is environmentally responsible, and conscious of both street level and of global impact of doing things right.

 


Early History

Arguably, Portland’s first act of ‘building green’ was in 1892, when it built a reservoir network to protect and preserve the sole source of its drinking water, the pristine . Today, this 102-square mile conservation zone provides ample fresh water to a region of half million people

Fast forward almost 100 years and the same ethic motivated Portlanders to reject a Robert Moses-style highway plan...

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DSC_0022 In the last of the livability seminar series, OTREC's visiting scholars program welcomed Shawn Turner from the Texas Transportation Institute. Shawn's research spans the gamut of intelligent transportation systems data to bicycle and pedestrian issues.  Most recently, Shawn participated in the International Scan on Pedestrian and Bicyclist Safety and Mobility.  His presentation compared his experiences on the scan in Europe to those in China.  During his presentation, he posed three challenges to Oregon:

  • How does active transportation contribute to economic development?
  • What is the tipping point for behavior and behavioral change?
  • Can vanity play a role in social acceptance?

His presentation was followed by a discussion with local agencies, faculty, students and partners along with a 10-mile tour of innovative bike infrastructure in Portland.  Thank goodness...

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The role of walking in the development of healthy, livable communities is being increasingly recognized. In urban areas, intersections are often viewed as a deterrent to walking, as their operation primarily favors automobiles, leading to large and unnecessary delays for pedestrians. There is currently very limited research on accommodating and/or prioritizing pedestrians at signalized intersections in the North American context. Pedestrians are often considered as a deterrent to efficient vehicular traffic flow and therefore active efforts to include them in operational decisions at intersections have been lagging. This research aims to fill that gap by understanding factors that influence pedestrian crossing behavior at signalized intersections and developing cost effective and easily deployable signal timing strategies that could be employed at intersections, to increase efficiency for pedestrians.

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Summary: Urban bicyclists’ uptake of traffic-related air pollution is still not well quantified, due to a lack of direct measurements of uptake and a lack of analysis of the variation in uptake. This paper describes and establishes the feasibility of a novel method for measuring bicyclists’ uptake of volatile organic compounds (VOC) by sampling breath concentrations. Early results from the data set demonstrate the ability of the proposed method to generate findings for transportation analysis, with statistically significant exposure and uptake differences from bicycling on arterial versus bikeway facilities for several traffic-related VOC. These results provide the first empirical evidence that the usage of bikeways (or greenways) by bicyclists within an urban environment can significantly reduce uptake of dangerous traffic-related gas pollutants. Dynamic concentration and respiration data reveal unfavorable correlations from a health impacts perspective, where bicyclists’ respiration and travel time are greater at higher-concentration locations on already high-concentration roadways (arterials).

Bio: Alex Bigazzi is a Ph.D. candidate in Transportation Engineering at PSU, where he is also teaching a class on transportation emissions modeling....

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The video begins at 2:45.

Topic: Skateboarding as Transportation: Findings from Exploratory Research

Bio: Tessa Walker is currently completing her thesis on non-motorized transportation and qualitative research methods with supervision from Dr. Jennifer Dill and Dr. David Morgan. For more information on her thesis research please visit the Skate Study PDX website (http://www.skatestudypdx.wordpress.com). Tessa has previously worked in town planning in Vermont, sustainability auditing in Massachusetts, and in bicycle and pedestrian transportation research with the Family Activity Study at PSU. She is currently an intern at the public opinion research firm DHM Research, and she will be a 2013-2014 Hatfield Fellow.

The video begins at 0:10.

Summary: The declining rates of physical activity among children, particularly adolescent girls, are well-documented, yet there has been insufficient research into the attitudes about health behaviors, particularly active travel, of the children themselves. Tara's research explores attitudes about active transportation among children aged 4-17 years and examines how perceived ability, self-efficacy, and sensitivity to certain environments or facilities vary across gender and age of the children. She utilises data from the Family Activity Study, a multi-year longitudinal intervention study in Portland, Oregon, in which 490 children answered surveys regarding their attitudes, perceptions, and behaviors about traveling by walking, bicycling, or being in a car.

Dr. James Sallis, Professor of Psychology, San Diego State University; Director, Active Living Research
Co-sponsored by the School of Community Health

The video begins at 4:40.

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Webinar: Land Use Mix and Pedestrian Travel Behavior

Smart growth policies have often emphasized the importance of land use mix as an intervention beholding of lasting urban planning and public health benefits. Past transportation-land use research has identified potential efficiency gains achieved by mixed-use neighborhoods and the subsequent shortening of trip lengths; whereas, public health research has accredited increased land use mixing as an effective policy for facilitating greater physical activity....

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