An aerial view of a multifamily housing complex next to a road
Jul 10, 2019
Photo by cegli
Kelly Clifton, Portland State University

Many cities are reconsidering their reliance on ITE's Trip Generation Manual, now in its 10th edition. 

Kelly Clifton, TREC researcher and associate dean for research of Portland State University's Maseeh College of Engineering & Computer Science, is one of the people leading the charge to identify better, more nuanced ways to anticipate transportation demand; especially person (non-car) trips. In an extended series of TREC projects, Clifton and...

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People on e-scooters
Jul 10, 2019

The National Institute for Transportation & Communities (NITC) research consortium, led by Portland State University, has awarded $1.035 million in total funding for ten research projects spanning five universities. This year we focused funding on micromobility, traffic, meeting the transportation needs of underserved populations and people with disabilities, and the intersection of transportation and housing.

Led by Reid Ewing of the University of Utah, Nicole Iroz-Elardo and Arlie Adkins of the University of Arizona
 
Led by Yao-Jan Wu of the University of Arizona, Xianfeng Yang of the University of Utah and Sirisha Kothuri of Portland State University
This multi-university collaboration builds upon previous research led by Yao-Jan Wu in multi-modal traffic monitoring, as well as...
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Jul 09, 2019

Darshan Chauhan, Portland State University

Darshan Chauhan is a graduate research assistant in civil engineering at Portland State University. He currently serves as the treasurer of STEP (Students in Transportation Engineering and Planning), PSU's transportation student group, and generously volunteers his time at a variety of transportation-related events via PSU's Transportation Research and Education Center (TREC). He will defend his masters thesis on network flow problems this year, and plans to continue on to earn his PhD. In the 2018/2019 academic year, Darshan earned a Walter H. Kramer Fellowship from Portland State University.

LinkedIn


Tell us about yourself?

I am a second-year Masters student in the civil engineering program with a transportation focus at PSU. I have been training with Prof. Unnikrishnan here to understand, model, and tackle uncertainties in different transportation networks. Before coming to Portland, I completed my Bachelor’s degree in civil engineering at BITS Pilani Hyderabad Campus, working as an undergraduate researcher in areas like fracture mechanics, optimization, and alternate cementitious materials through my junior and senior years. After completing my masters, I am continuing for my Ph.D. in transportation at PSU. Apart from school, I really enjoy...

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TREC Director Jennifer Dill speaks to TURF fellows
Jun 13, 2019

Our Transportation Undergraduate Research Fellowship (TURF) program is in its second year, and we're excited to introduce our 2019 cohort. The TURF program advances critical thinking and research skills under the guidance of a PSU transportation faculty mentor. This year's fellows are working on various research initiatives at TREC, including e-scooters, bicycle and pedestrian count data, multimodal trip generation, pedestrian safety and equitable transit.

TURF is funded by an education grant through our U.S. DOT funded program the National Institute for Transportation and Communities (NITC). Students were selected through a competitive application process; we had 103 applications from 23 U.S. states and 4 countries.

The TURF fellows will spend six weeks during the summer of 2019 at Portland State University, tackling transportation engineering and planning research questions.

MEET THE 2019 TURF FELLOWS

Anaisabel Crespo - Leiva, SUNY Plattsburgh

...
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An older couple jogs through a park
Jun 05, 2019
Photo Credit: Tomwang112
Ivis Garcia Zambrana, University of Utah; Alan DeLaTorre, Portland State University

Research on older adults frequently explores the notion of “aging in place”—providing older adults the opportunity to continue to live in their own homes and communities. However one’s ability to stay or leave, particularly in old age, often depends on the built environment. An accessible neighborhood that prioritizes mobility affords the ability to meet basic needs like goods, services, and social activities.

This life-space mobility is...

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Cars waiting at a traffic signal
Apr 04, 2019
Photo by Canetti
Principal Investigator: Gerardo Lafferriere, Portland State University
Learn more about this research by viewing the Executive Summary and the full Final Report on the Project Overview page.

Automobile traffic congestion in urban areas comes with significant economic and social costs for everyone. According to the 2015 Urban Mobility Report, the total additional cost of congestion was $160 billion. As more people move to metropolitan areas, the problems only intensify. The latest NITC report offers a new approach to urban traffic signal control based on network consensus control theory which is computationally efficient, responsive to local congestion, and at the same time has the potential for congestion management at the network level.

Traffic signals represent a significant bottleneck. As cars queue up at a stoplight, then gradually move again once the...

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Pedestrians crossing a street
Mar 06, 2019
Principal Investigator: Kelly Clifton, Portland State University
Learn more about this research by viewing the full Final Report on the Project Overview page.

The latest NITC report offers improved tools for pedestrian modeling.

Led by Kelly Clifton of Portland State University, researchers had previously created the the MoPeD pedestrian demand model as well as a pedestrian index of the environment (PIE) for forecasting pedestrian travel. The PIE index improved the sensitivity of walk trip models by incorporating contextual features of the built environment that affect walking behavior in the Portland, Oregon region. Read about Clifton's previous body of work on context-specific modeling.

Useful for academic researchers in transportation, Clifton's research provides a framework for incorporating pedestrian travel behavior forecasts into traditional four-step travel demand models.

Since the method was based on Portland, the next step was to adapt the tools for wider use. In this new report, Clifton and Jaime Orrego-Onate of...

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PSU students
Jan 28, 2019

For the second year in a row, we're opening up an exciting opportunity for undergraduate students interested in transportation: Spend a summer at Portland State University to learn more about the world of research in transportation through our Transportation Undergraduate Research Fellowship (TURF) program. This program is open to current undergraduate students from any university who are interested in learning more about transportation engineering or planning research. 

Hosted at PSU, selected students will be paired with a PSU faculty mentor (from either the College of Urban and Public Affairs or the Maseeh College of Engineering & Computer Science). The student will carry out research on a transportation project for ten weeks at 40 hours per week. TURF Fellows are provided a $7,500 stipend, but must find and fund their own lodging.

Decisions will be made by March 29, 2019. Contact us at asktrec@pdx.edu with any questions.

APPLY FOR TURF 2019 (by Feb 15th)

"Conducting...

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Jan 02, 2019

This page serves as a homebase for our coverage of the 2019 Transportation Research Board (TRB) annual conference. Check back here for ongoing updates, as well as our Twitter and Facebook.

  • NITC GUIDE TO TRB (PDF): Our printable schedule of where all of our NITC researchers will be presenting at lectures, poster sessions, and workshops

  • NITC RECEPTION AT TRB: Join us for transportation bingo and networking on Tuesday, January 15 (7:30–10:30pm) nearby at Fado Irish Pub

  • NITC STUDENT AWARD AT CUTC BANQUET: We’ll be celebrating our 2018 NITC “Student of the Year,"  Travis Glick of Portland State University, at the annual CUTC Banquet. Travis is a NITC scholar and graduate research assistant, and will present work in three TRB sessions.

MULTI-UNIVERSITY COLLABORATIVE PROJECT HIGHLIGHTS:

    ...
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Kelly Clifton and student - presenting research at TRB Annual Meeting
Jan 02, 2019
Principal Investigator: Kelly Clifton, Portland State University
Research spans multiple studies and years of work.
This content was originally published in the June 2018 edition of the  U.S. DOT UTC Spotlight series (PDF).

University Transportation Center (UTC) Spotlight

In recent decades, cities have become increasingly motivated to invest in infrastructure that supports multimodal options like walking, biking and public transit. Trip generation, the first step in conventional four-step forecasting models, is a central figure in determining how those investments are made.

However, when considering pedestrian and bicycling travel, the current practice is usually to either leave those trips out of the model altogether, or to simply present them as a mode choice option that is not analyzed further. In short, they’re car-centric.

Without reliable trip generation rates for anyone but drivers, an accurate transportation impact is difficult to predict. Certain land uses will draw far more walkers, cyclists and transit riders than drivers. Cities lack enough information to strategically plan for multimodal...

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