Portland State University

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...

Watch video

View slides

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....

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.