transit | Transportation Research and Education Center

Researchers expand trip generation to include people walking, biking and riding transit

Feb 07, 2017

A new NITC report offers a multimodal framework for transportation impact analysis – a welcome tool for professionals in many cities seeking more detailed data about non-drivers.

Improving Trip Generation Methods for Livable Communities, a research project headed by Kelly Clifton of Portland State University and Nico Larco of the University of Oregon, is the latest effort in an ongoing collaboration to create more open sourced, widely available data about non-motorized road users.

Over the last decades, cities have become more invested in fostering the conditions to support walking, biking and public transit.

The land development process presents a unique challenge.

Prior to a zoning change or new development, someone has to determine what its impact on the transportation system will be, and whether upgrades will be necessary to accommodate travelers to the new destination. Trip generation is the first step in the conventional transportation forecasting process.

Current trip generation methods used by engineers across the country tend to focus on motorized modes.

Without reliable trip generation rates for anyone but drivers, the transportation impact is difficult to predict. Certain land uses will draw far more walkers,...

Design approach addresses minefield of obstacles for aging transit riders

Jan 05, 2017

The final report on this research is available now: Design for an Aging Population

Published in April 2017, this study sought to increase understanding of the obstacles faced by people with impairments in vision, hearing and/or mobility, which are common issues for older people, and generate physical product solutions.

The research shows that aging riders face conceptual, physical and social barriers that impact their willingness to use buses. Using the bus was seen as inconvenient, time consuming, physically draining and potentially frustrating. Priority seating areas designated for older and disabled users fill quickly. People with mobility challenges may use bulky walkers and require the availability of grab bars, and users of wheeled mobility devices need different device security. Several situations noted in the study show that physically challenged riders are subject to awkward, uncomfortable social dynamics more than other bus users. Innovation in easy access seats and secure WhMD stations at the front of the bus are critical for older users, as it makes riding the bus less draining and more safe.

This research was presented at TRB's 2017 annual meeting. See below for our coverage of the research at TRB.

Seniors make up a...

NITC researchers look into crowdsourcing travel data

Apr 25, 2016

NITC researchers have tested a method of collecting transportation behavior data using a smartphone app, with promising results.

The process could save transit agencies “hundreds of thousands of dollars,” says lead researcher Christopher Bone, and give them access to comprehensive, real-time data about their ridership, all without compromising passengers’ privacy.

Christopher Bone, Marc Schlossberg, Ken Kato, Jacob Bartruff and Seth Kenbeek of the University of Oregon designed a custom mobile application, which allows passengers to volunteer information about their travel habits, and recruited passengers to use it in a test case.

Their report, “Crowdsourcing the Collection of Transportation Behavior Data,” was released this month.

Download it here.

Participants were asked to use the app for three weeks on Lane Transit District’s EmX bus line located in the Eugene-Springfield area in western Oregon. Researchers placed sensors on the buses and at stops to detect when someone using the app was boarding. When a user came within range of a sensor, they...

Today at TRB: Sunday

Jan 09, 2016

Sunday, the first day of the Transportation Research Board annual meeting in Washington, D.C., is workshop day. Portland State University doctoral student Tara Goddard presents in a showcase of research stemming from the prestigious Dwight D. Eisenhower Transportation Fellowship program.

Goddard probed the question of why so many bicyclists die in traffic crashes. Cyclists are 12 times more likely to be killed in a crash than a driver or passenger in a car. She wondered what role drivers' attitudes toward cyclists might play.

Goddard's research uses a survey to measure drivers' attitudes and self-reported behaviors and to test drivers' implicit attitudes toward both other drivers and cyclists. She pairs the survey piece with a lab experiment that uses hazard-perception video clips to examine whether drivers notice cyclists.

By this approach, Goddard hopes to understand drivers' attitudes and whether those attitudes can predict how they act on the road. That understanding can potentially lead to steps to improve cyclist safety. Her workshop runs 9 a.m. to noon in Room 202B of the Walter E. Washington Convention Center.

Disaster recovery workshop

John MacArthur of TREC presents "Smart, Shared and Social: Enhancing All-Hazards Recovery Plans With Demand...

GPS data can identify congestion hot spots

Jan 07, 2016

Traffic congestion on urban roadways can influence operating costs and cause travel delays.

Portland State University master’s students Nicholas Stoll and Travis Glick will present a paper introducing solutions for locating the sources of congestion at the 2016 annual meeting of the Transportation Research Board.

With their faculty advisor, Miguel Figliozzi, Stoll and Glick looked into using bus GPS data to identify congestion hot spots.

By using high-resolution GPS data to visualize trends in bus behavior and movement, the researchers were able to examine the sources of delay on urban arterials.

These visualizations, which can be in the form of heat maps or speed plots like the one shown here on the right (an application of numerical method applied to a 2,000 ft segment of SE Powell), can be used by transportation agencies to identify locations where improvements are needed. For example, adding a queue jump lane at a congested intersection can improve flow.

The researchers used fine-grained bus data provided by TriMet to create the visualizations. Buses have been used as probes to estimate travel times before, but with...

PSU MURP workshop project comes to life in Salem-Keizer

Jun 15, 2015

Last year, we reported on a Portland State University graduate student project that created a tailored transit solution for the Salem-Keizer area.

This year, the flexible transit system created by students in the Master of Urban and Regional Planning (MURP) program has become a reality.

The West Salem Connector service launched as a year-long pilot program on June 1.

The new service, which focuses on improving transit access for those who actually use it in low-demand areas, will be free for the first six months.

Students in the MURP program spend about five months completing workshop projects, which focus on real-world planning problems and see them through. Not every student project, however, makes it to the stage of implementation.

The fact that the Salem-Keizer flexible transit line is becoming a reality reflects the quality of this group's work.

The Paradigm Planning group consisted of MURP students Darwin Moosavi, Brenda Martin, Matt Berggren, Lauren Wirtis, Mike Sellinger and CJ Doxsee. The project, ...

NITC researchers evaluate performance of traffic control systems

Apr 28, 2015

A new study led by Miguel Figliozzi of Portland State University provides a microscopic evaluation of how two advanced traffic control technologies work together.

Powell Boulevard, an east-west arterial corridor in southeast Portland, Oregon, has been the focus of several research studies by Figliozzi’s TTP research lab. The street is a key route for public transit buses as well as pedestrians and cars, but heavy traffic at peak hours often results in delays.

On Powell there are two systems operating concurrently: a demand-responsive traffic signal system called Sydney Coordinated Adaptive Traffic System (SCATS) and a Transit Signal Priority (TSP) system. The TSP in the Portland metro region is designed to give priority to late buses and to boost transit performance.

In previous studies Figliozzi’s lab has analyzed a multitude of factors on Powell Boulevard including traffic congestion, transit times, air quality and cyclists’ intake of air pollutants, and a before/after evaluation of SCATS.

For this study, the researchers used a novel approach to evaluate how well SCATS and TSP work together by integrating three major data sources and video recordings at individual intersections.

Figliozzi’s team worked closely with TriMet and the City of Portland to...

TREC wins $945,000 FTA emergency response grant

Feb 20, 2015

The Federal Transit Administration has announced a $945,000 grant for a Portland State University project to help transportation agencies respond to regional emergencies. The project is led by TREC, with partners TriMet, the Portland Bureau of Emergency Management and Metro.

The announcement came as part of $29 million in grants through the FTA’s Innovative Safety, Resiliency, and All-Hazards Emergency Response and Recovery Demonstration program. The grants will help transit agencies improve safety, better withstand natural disasters, and respond more effectively to emergencies. A list of selected projects is available online.

The TREC project will develop and test a transportation demand management system that uses social media and intelligent transportation systems for large-scale emergency response and recovery. While managing demand is a cornerstone of campaigns to reduce private vehicle trips, it is often absent from emergency recovery plans, said project lead John MacArthur of TREC.

“This looks at how transit can be a reliable backbone to keep a city functioning,” MacArthur said. “That means during the response period, but also during recovery, which can last a long time.”

Agency partners expressed enthusiasm for the collaborative approach to an issue they all face.

“TriMet provides shelter buses for small-scale...

Abundant access: Jarrett Walker on freedom through transit

Sep 09, 2014

With his 2011 book, “Human Transit,” consultant Jarrett Walker provided planners and community members with a new way to think about the choices transit planning requires. Since that time, Walker has focused on what transit actually delivers. He calls this concept “abundant access”: how much of your city is available to you in a short amount of time.

Walker will delve into this topic Monday, Sept. 15 as the keynote speaker at the Oregon Transportation Summit. Online registration for the summit closes Wednesday night.

“Abundant access is an interesting way to think about transit and something that brings it into the personal frame of liberty that is missing from most analysis of urban outcomes,” Walker said. “How we talk about sensations of freedom, so that we don’t just sound like bureaucrats who know what’s good for everyone.”

Urbanist leaders go astray, Walker said, when they put other goals ahead of the liberty and opportunity that useful transit provides. That could mean catering to developers or creating a symbolic transit system that is fun to ride but doesn’t serve regular transit users well.

Walker calls the New Urbanist conceit of...

How does transit move you? Oregon Transportation Summit special focus

Jul 22, 2014

Transit supporters offer up a host of arguments for their favorite form of transportation but may struggle to counter a response of “prove it.” This year’s Oregon Transportation Summit could help change that.

Fresh research showing some of the benefits of transit will keep the public transportation track lively and relevant during the sixth annual summit. Morning and afternoon workshops spotlight transit, bookending a luncheon keynote by noted transit planner Jarrett Walker.

The Oregon Transportation Summit takes place Monday, Sept. 15 at Portland State University.

University of Utah researcher Reid Ewing made national and international headlines recently with a study showing the effect of light rail in a busy travel corridor. The study, funded by the National Institute for Transportation and Communities, was the first to...

Disaster recovery workshop

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