Post date: Fri, 11/07/2014 - 11:52am
Event Date:
Apr 05, 2013
Content Type: Events

The video begins at 1:47.

Joseph Broach, PhD candidate in Urban Studies, will discuss the results of his research, which models the propensity of children aged 6-16 to walk or bike to parks and school without an adult chaperone, extending existing work on children’s active travel in several ways: 1) focus on travel without an adult, 2) inclusion of school and a non-school destinations, 3) separate walk and bike models, 4) consideration of both parent and child attitudes and perceived social norms, 5) explicit inclusion of household rules limiting walking or bicycling.

Post date: Fri, 10/31/2014 - 10:58am
Event Date:
Content Type: Blog entry

Jennifer Dill, Ph.D.
Professor, Urban Studies & Planning
Director, TREC

University transportation research often follows a typical pattern. You write a proposal and it gets funded. You engage some bright graduate students and hopefully community partners. Collect data. Analyze data. Draw conclusions. Most projects take at least a year, often 2-3 years. It takes longer for the results to get out in a peer-review journal or final report. That can sometimes be frustrating.

The purpose of this blog is to allow our TREC researchers to present their research in a different forum. This can allow us to share early results or findings that are interesting, but may not make it into the journal article. We can also reflect on and discuss how our work relates to current events or public debates, without the constraints of academic journals. We’ll cover a wide range of topics that reflects the breadth of what we’re doing at Portland State. You’ll hear from faculty, researchers, and graduate students. We hope you enjoy it.

Post date: Thu, 08/28/2014 - 5:45am
Event Date:
Content Type: News Item

In 2009, researchers at the Massachusetts Institute of Technology (MIT) developed the Copenhagen Wheel, a device that converts an ordinary bicycle into a hybrid e-bike.

An e-bike is considered a motorized bicycle under Massachusetts law. This means that once the 13-pound, 26-inch Copenhagen Wheel is attached to the rear wheel of a bicycle, the resulting vehicle requires a driver’s license to operate, must be registered with the DMV, and its rider must wear, not just a bike helmet, but a motorcycle helmet to be in compliance with the law.

Electric bicycles, or e-bikes, are well established in China and other Asian and European countries but market adoption has been slow in the United States.

Part of the reason could be that the law is often nebulous where e-bikes are concerned.

NITC researchers at Portland State University conducted a policy review revealing the current state of legislation regarding e-bikes in the United States and Canada.

The report, Regulations of E-Bikes in North America, provides a summary of legal definitions and requirements surrounding the use of electric-assist bicycles in each of the 50 states, Washington D.C. and 13 Canadian provinces.

No two jurisdictions are exactly alike in their legal treatment of this relatively new mode of...

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Post date: Sun, 08/17/2014 - 11:38am
Event Date:
Content Type: News Item

An OTREC report from Oregon State University looked at various center median and bicycle lane configurations, and how they affect traffic at road access points.

In the American Association of State Highway and Transportation Officials (AASHTO) publication A Policy on Geometric Design of Highways and Streets, commonly known as the Green Book, access points include the intersections of public roads as well as driveway locations. In the Green Book, most of the supporting research for the spacing of driveways is based on standard highway design procedures. They include simple human factors and geometric principles, and have not been thoroughly evaluated based on a variety of road cross section configurations.

Principal investigator Karen Dixon of Oregon State University sought to close this research gap by evaluating the influences of select cross-sectional-related design elements, specifically median configurations and bicycle lanes, on driveways.

Dixon's research team evaluated eight physical sites and four simulated scenarios with different driveway spacing and roadway cross section designs. The primary research goal was...

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Post date: Thu, 08/07/2014 - 1:01pm
Event Date:
Nov 14, 2014
Content Type: Events

The video begins at 0:29.

View slides

Speaker: Jordan Palmeri, Science and Policy Analyst, Oregon Department of Environmental Quality Green Building Program
Topic: Accessory dwelling units in Portland, Oregon: Evaluation and Interpretation of a Survey of ADU Owners

Summary: Accessory Dwelling Units (ADUs) are booming in Portland, Oregon. ADUs are small separate living units on single family lots that are often called granny flats or mother-in-law units. Over the last few years, fee waivers from the City of Portland have increased ADU development from 30 units per year to over 200 units. These discreet forms of density can offer a variety of environmental, social, and economic benefits to ADU owners and their communities. Many of these benefits, however, have always been speculated rather than substantiated by data.

In an effort to better understand the real impact or benefit of this housing form, the Oregon Department of Environmental Quality and partners conducted a survey of ADU owners in Portland, Eugene, and Ashland, Oregon. This was the largest survey of ADUs owners ever conducted in the United States and the results have significant utility in policy for Oregon cities and beyond.

This presentation will present the results of survey and highlight topics such as ADU...

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Post date: Mon, 07/07/2014 - 12:02pm
Event Date:
Content Type: News Item
A new OTREC report explores an innovative technique for making household travel data more widely available without compromising individual privacy.
Public agencies spend vast amounts of money collecting information in household travel surveys.
In the report, Wider Dissemination of Household Travel Survey Data Using Geographical Perturbation Methods, lead investigator Kelly Clifton of Portland State University examines ways to make that information more accessible by planners and other professionals.
Survey respondents are guaranteed anonymity in exchange for their participation. In addition to asking which modes individuals use to get around, surveys learn where they live, where they work, their household sizes and demographic information.
Detailed geospatial referencing of the home, work and other travel destinations is common practice.
Such data can be of enormous use to planning professionals, but its dissemination must be balanced with the need to keep locations confidential.
To protect this confidentiality, data are often aggregated to a geographic level such as census tracts or transportation analysis zones (TAZs) before being publicly shared.
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Post date: Mon, 06/30/2014 - 9:42am
Event Date:
Content Type: News Item

Several notable transportation projects have come out of Portland State University’s Master of Urban and Regional Planning (MURP) program this spring.


Each year, graduating students finish up their two-year program of study by forming into groups and carrying out a professional project. Clients work with Portland State University to identify planning needs that would be a good fit for the MURP program, and students choose projects based on their interests.



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Post date: Thu, 06/26/2014 - 11:10am
Event Date:
Content Type: News Item

OTREC researchers Krista Nordback and Sirisha Kothuri will present research at the North American Travel Monitoring Exposition and Conference (NATMEC) from June 29 to July 2, 2014.

The conference, organized by the Transportation Research Board, provides an opportunity for traffic monitoring professionals to share information about collecting and using traffic data.

Nordback will talk about what professionals can do to maintain bicycle count programs at the state level. She will give a presentation on the feasibility of using existing traffic signals to collect bicycle counts, and on what to do with that data once it is gathered.

Kothuri will present strategies for counting pedestrians using existing resources such as signal controllers and software already installed at intersections.

Nordback and Kothuri will draw from their own research as well as from the work of Miguel Figliozzi, Chris Monsere, Pam Johnson and...

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Post date: Fri, 06/20/2014 - 4:21pm
Event Date:
Content Type: News Item

Portland State University’s Master of Urban and Regional Planning (MURP) program matches students with clients every year to execute professional-level planning projects.


This spring, InSite Planning Group, a team of six MURP students, conducted a detailed corridor study for the city of Beaverton.


The ...

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Post date: Mon, 06/16/2014 - 3:06pm
Event Date:
Content Type: News Item

Portland State University students in the Master of Urban and Regional Planning (MURP) program came up with some innovative transit solutions for the Salem-Keizer area, just south of Portland, Ore. in the Willamette Valley.

The Salem-Keizer transit provider, known as Cherriots, requested that a planning group come up with alternative forms of transit that would be a better fit for the study area. MURP students Darwin Moosavi, Brenda Martin, CJ Doxsee, Mike Sellinger, Lauren Wirtis and Matt Berggren took on the challenge as their capstone project.

The bus service currently provided by Salem-Keizer Transit is inefficient in the low-density neighborhoods of West Salem, South Salem, and Keizer. Buses in those neighborhoods often run half-full, or nearly empty, along looping, circuitous roads that lack an interconnected grid pattern.

The student team, Paradigm Planning, proposed a “flexible transit” system which can better serve this type of low-density suburban area.

Fixed-route transit is typical bus service, in which buses come to predefined stops at regularly scheduled intervals. Demand-responsive or paratransit, the opposite extreme, is an on-demand service typically reserved for the elderly or disabled, in which a rider calls to be picked up by a bus at...

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