Post date: Fri, 02/09/2018 - 10:05am
Event Date:
Content Type: News Item
Principal Investigator: Nathan McNeil, Portland State University
Learn more about this research by viewing the Summary Report, related publications and the three Final Reports from each phase of the research on the Project Overview page. Hear firsthand from the researchers by watching the August 2017 webinar.

The third and final phase of our bike share equity research project has been published, with new findings from a survey of bike share users.

Riders targeted for equity-focused outreach efforts—lower-income individuals and people of color—were most likely to cite cost savings or discounted membership as reasons why they joined, while higher-income and white users were more likely to cite the convenience of using bike share. Lower-income riders were also more likely to have heard about...

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Post date: Mon, 08/28/2017 - 9:57am
Event Date:
Sep 29, 2017
Content Type: Events

LOCATION: PSU, Urban Center Building, Room 204 (Distance Learning Center Wing)
LIVESTREAM ONLINE: Click here on the day of the seminar to stream it live

SEMINAR VIDEO

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Post date: Wed, 08/23/2017 - 3:02pm
Event Date:
Mar 07, 2018
Content Type: Events

This project builds on the success of NITC’s first Pooled Fund project that created the first national bicycle and pedestrian traffic count archive, named BikePed Portal. The next step for BikePed Portal is to improve its usability for both data providers and data users, specifically transportation professionals. To improve usability, area transportation planners will be invited to participate in an idea gathering session to help design an “Explore Data Page.” The purpose of this page is to allow transportation planners (data users) ready access to the non-motorized count data available in BikePed Portal in a way that is useful and attractive to them. The page may include graphical displays (maps,...

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Post date: Tue, 11/25/2014 - 1:09pm
Event Date:
May 21, 2010
Content Type: Events

Room 204 of the Distance Learning Center Wing of the Urban Center on the Portland State University campus

Abstract: A variety of types of electric bicycles are now available to consumers in America and around the world. While there has been strong uptake of these vehicles in China, there remains uncertainty in other markets about their ultimate potential as a transportation mode. The technology is evolving in ways that are likely to better meet traveller's needs and the growth of this mode presents both opportunities and challenges. Since they have implications for transportation policy, planning and operations it is appropriate for the transportation profession to consider these vehicles carefully. This seminar will review developments and emerging issues with this form of transportation technology.

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Post date: Wed, 11/12/2014 - 2:13pm
Event Date:
Dec 06, 2013
Content Type: Events

The video begins at 2:34.

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Other presentation materials: Handout (PDF)

Summary: The recent City Club report on bicycling provided an opportunity to collect and analyze a number of data sets including the new Hawthorne Bridge data. One question is where Portland bicycling on the logistic curve -- a common tool for judging the maturity of a developing product or activity. Logistic curves are used for marketing, for epidemiology, and even for visits to Indian owned casinos. The preliminary evidence is that we are reaching the horizontal area of the curve. Additional evidence Our further research into future policies indicates a shift to bicycle boulevards in order to attract more risk averse riders.

Bio: Robert McCullough is an energy economist (and an adjunct at PSU) who has written, talked, and testified on energy issues across the U.S. and Canada. He was instrumental in the identification and prosecution of Enron's energy traders. He also works with aboriginal groups in Quebec and Oregon, activists in California and Ohio, as well as many others. His most recent project is the economic review of the WNP-2 nuclear station for Physicians...

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Post date: Wed, 11/12/2014 - 2:06pm
Event Date:
Nov 15, 2013
Content Type: Events

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Summary: Although the running of red lights is perceived by motorists as a commonplace behavior for cyclists, little research has been done on the actual rates of cyclist compliance at signalized intersections. Furthermore, little is known about the factors that influence cyclist non-compliance. This research seeks to illuminate the rates of and reasons for infringement against red lights using video footage and survey data from cyclists in Oregon. 

Bio: Sam became interested in transportation and planning while studying abroad in Freiburg im Breisgau, Germany. After benefiting from the efficient transit service and excellent walkability there, he came back to the states with a gusto for safe, efficient, and environmentally sustainable transportation. After finally figuring out what to do with his Civil Engineering degree, he enrolled in Portland State. Sam's research interests include cyclist behavior and the comprehension and safety implications of new infrastructure. Originally hailing from Kansas, he has grown weary of Wizard of Oz jokes but is otherwise happy to call Portland his home, especially with the abundance of good coffee, micro brews, and stellar pie that PDX has to offer.

Post date: Wed, 11/12/2014 - 2:04pm
Event Date:
Nov 08, 2013
Content Type: Events

The video begins at 1:37.

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Summary: Signalized intersections often rely on vehicle detection to determine when to give a green light. The 2009 Manual of Uniform Traffic Control Devices (MUTCD) includes an on-pavement marking and curbside sign that public agencies can use to indicate where cyclists should position themselves while waiting at an intersection. This presentation reviews the effectiveness of current markings, signs, and other methods used to help cyclists properly position themselves over detection.

Stefan Bussey is an undergraduate civil engineering student at Portland State University. He is interested in exploring how road users’ interactions with each other and the built environment affect the efficiency and safety of road networks. He currently works as a civil design intern at Harper Houf Peterson Righellis Inc. 

Post date: Wed, 11/12/2014 - 1:57pm
Event Date:
Oct 18, 2013
Content Type: Events

The video begins at 1:12.

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Summary: Electric bicycles (e-bikes) are well established in China and other Asian and European countries but have yet to realize their potential in the United States, although recently the number of e-bikes has been growing. Research on the economic, operational, and safety issues of e-bikes in the U.S. is limited. This research aims in part to understand if different bicycling technology, in this case electric assist bicycles or e-bikes, can reduce barriers to bicycling and encourage more bike trips and longer bike trips, and increase the diversity of people bicycling, including people with a disability or chronic injury to bicycle. Some of these barriers include trip distance, topography, time, and rider effort. E-bikes typically resemble a standard pedal bicycle with the addition of a rechargeable battery and electric motor to assist the rider with propulsion. To answer these questions, we conducted an online survey of existing e-bike users on their purchase and use decisions. Results from 553 e-bike users across North America are analyzed here. Results suggest that e-bikes are enabling users to bike more often, to more distant locations, and to carry more cargo with them. Additionally, e-bikes allow people who would otherwise not be able to bike because of physical limitations or...

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Post date: Wed, 11/12/2014 - 1:41pm
Event Date:
Feb 28, 2014
Content Type: Events

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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. His dissertation investigates how urban...

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Post date: Wed, 11/12/2014 - 1:38pm
Event Date:
Feb 21, 2014
Content Type: Events

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Summary: In this seminar, Tara Weidner will discuss changes in the works to the State Analysis Procedures Manual (APM) to include three graduated levels of bike planning methods for use in Oregon communities, based on community size, data needs, and planning stage.  These include the Bike Level of Traffic Stress (BLTS), a sketch tool used to assess bike network connectivity, the data-heavy Highway Capacity Manual Multi-modal Level of Service (MMLOS) procedures, and a simplified MMLOS developed by the same researchers. 

Bio: Tara Weidner is an Integrated Transportation Analysis Engineer in ODOT’s Transportation Planning Analysis Unit (TPAU).  She has over 20 years of experience in modeling and analysis of multi-modal transportation systems. Her work focuses on arming Oregon’s communities with tools to plan for the future, including being the lead on ODOT’s GreenSTEP Greenhouse Gas model and coordinating other multi-modal transportation and land use tools and analysis. She joined TPAU about a year ago after working as a Senior Planner for Parsons Brinkerhoff (PB), where she was the consultant lead for the ODOT StateWide Integrated Model (SWIM) and worked with the FHWA on Mega-Regions modeling tools and managed a webinar series on "Climate Change Planning for MPOs.

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