View Blanc's slides
View Mathez's slides
The video begins at 0:33.
Following the 2015 annual meeting of the Transportation Research Board, this Friday seminar will showcase some of Portland State University's student TRB research.
Presenters:
Bryan Blanc, GRA in civil and environmental engineering
Leveraging Signal Infrastructure for Non-Motorized Counts in a Statewide Program: A Pilot Study
Summary: Transportation agencies are beginning to explore and develop non-motorized...
Read moreThe 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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We are committed to making decisions that promote the success and well-being of our campus community. Like an increasing number of universities nationwide, Portland State is taking steps to respond to the global pandemic. Until further notice, all live events hosted by TREC will be online only.
Friday Transportation Seminars at Portland State University have been a tradition since 2000. You can join us online at 11:30 AM.
As transit agencies modernize their fare payment systems, opportunities to pay with cash are reduced. This speeds boarding and lowers the cost of operations while also creating new sources of ridership data. Arguably, service is improved for riders as well as payment systems could work across modes,...
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View Steven Gehrke's slides
View Kihong Kim's slides
Following the 2015 annual meeting of the Transportation Research Board, this Friday seminar will showcase some of Portland State University's student TRB research.
Presenters:
Steven Gehrke, GRA in civil and environmental engineering
Toward a Spatial-Temporal Measure of Land Use Mix
Summary: Urban policies have emphasized the importance of mixing land uses in a neighborhood as an intervention beholding of lasting planning and public health benefits. Transportation planning research has identified the potential of efficiency gains... Read more
Connecting with cities and bike share operators from across the United States, Portland State University conducted a nationwide scan on what programs and initiatives were running to address equity in bike share. The report “National Scan of Bike Share Equity Programs” documents responses from over 70 bike share systems. This resource will help cities and operators navigate the range of actions that have been implemented to make bike share systems more equitable, examine successful strategies employed across the U.S., and understand how those successes (and challenges) are being measured and articulated. In doing so, we hope the report helps bike share systems learn from the experiences of others, innovate, and more quickly move toward greater equity. The research team will be joined by a bike share operator to discuss what they learned, best practices, and where they see the future of bike share equity programs headed.
This webinar is based on a study funded by the Better Bike Share Partnership and the National Institute for Transportation and Communities (NITC) and conducted at...
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Transportation Seminars at Portland State University have been a tradition since 2000. Formerly known as the Friday Transportation Seminar series, we've opened up PSU Transportation Seminars to other days of the week to better accommodate attendance. You can always watch online via Zoom.
As a social determinant of health, transportation significantly contributes to well-being through several pathways. Researchers and practitioners have called for health indicators as one way to integrate public health concerns into transportation decision-making. However, it is unclear how indicators are used and what their impact is on policy. This case study of five cities explored how health-related indicators are being used in municipal transportation plans, whether they are institutionalized into transportation agency...
Read moreThe video begins at 2:51.
Adam Moore: Bus Stop Air Quality: An Empirical Analysis of Exposure to Particulate Matter at Bus Stop Shelters
Congested traffic corridors in dense urban areas are key contributors to the degradation of urban air quality. While waiting at bus stops, transit patrons may be exposed to greater amounts of vehicle-based pollution, including particulate matter, due to their proximity to the roadway. Current guidelines for the location and design of bus stops do not take into account air quality or exposure considerations. This study compares the exposure of transit riders waiting at three-sided bus stop shelters that either: 1) face the roadway traffic or 2) face away from the roadway traffic. Shelters were instrumented with air quality monitoring equipment, sonic anemometers, and vehicle counters. Data were collected for two days at three shelters during both the morning and afternoon peak periods. Bus shelter orientation is found to significantly affect concentration of four sizes of particulate matter: ultrafine particles, PM1, PM2.5, and PM10. Shelters with an opening oriented towards the roadway were consistently observed to have higher concentrations inside the shelter than outside the shelter. In contrast, shelters oriented away from the roadway were observed to have lower concentrations inside the shelter than outside the shelter. The differences in particulate matter...
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View Patrick Singleton's slides
View Ryan Dann's slides
Following the 2015 annual meeting of the Transportation Research Board, this Friday seminar will showcase some of Portland State University's student TRB research.
Presenters:
Patrick Singleton, GRA in civil and environmental engineering
The theory of travel decision-making: A conceptual framework of active travel behavior
Summary: We present a unifying conceptual framework of active travel behavior called the theory of travel decision-making. It integrates seminal travel-related concepts from economics, geography, and psychology with... Read more
The video begins at 0:34.
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Speaker: Joseph Broach, Ph.D. Candidate, Portland State University
Topic: Trick or Treatment? Impact of Route-Level Features on Decisions to Walk or Bike
Summary: Some travel routes attract people walking and cycling, while others may scare them away. What features of street environments are most important, and how do available routes affect decisions to bike or walk on a specific trip?
Research to date has focused on either large-scale areal measures like "miles of bike lane nearby" or else has considered only shortest path routes. Neither method is suited to capturing the impact of targeted route-level policies like neighborhood greenways. This session will present a new technique for measuring bike and walk accessibility along the most likely route for a given trip. The method is applied to travel data, and results provide new insight into the relationship between route quality and travel mode choice.
