Research Projects | Transportation Research and Education Center

Effects of Earthquake-Induced Liquefaction on Bridge Foundations and Transportation Network Using CDSS

Principal Investigator: Arash Khosravifar

A magnitude 9.0 earthquake by the Cascadia Subduction Zone (CSZ) is believed to be capable of causing widespread soil liquefaction in the Pacific Northwest (PACNW). Affected infrastructures include highway bridges specifically the ones crossing the C ... Read More

Evaluation of Bus-Bicycle and Bus/Right-Turn Traffic Delays and Conflicts

Principal Investigator: Miguel Andres Figliozzi

The interaction between transit vehicles and bicycles can create conflict when both share the same space. In particular, the location of transit stops poses specific challenges along bicycle facilities. Little research exists to offer insight on how ... Read More

A Comprehensive Examination of Electronic Wayfinding Technology for Visually Impaired Travelers in an Urban Environment

Principal Investigator: Martin Swobodzinski

Co-Investigator: Amy Parker

Human wayfinding and navigation are key organizing activities that allow human beings to acquire knowledge about the environment and develop cognitive representations in support of such essential tasks as route planning and travel. These activities a ... Read More

Understanding Economic and Business Impacts of Street Improvements for Bicycle and Pedestrian Mobility - A Multi-City Multi-Approach Exploration

Principal Investigator: Jenny Liu

Co-Investigator: Jennifer Dill

This NITC National project was the first phase of a research effort measuring the economic impacts of bicycle and pedestrian street improvements. See the findings, final report and other products on the Phase II project page: https://nitc.trec.pdx.ed ... Read More

Understanding Factors Affecting Arterial Reliability Performance Metrics

Principal Investigator: Avinash Unnikrishnan

Co-Investigators: Sirisha Kothuri , Jason Anderson

Researchers from Portland State University (PSU) partnered with Washington County, Oregon to offer data-driven strategies in prioritizing funding for travel time reliability improvements on their urban arterials. The vast majority of existing researc ... Read More

Understanding Economic and Business Impacts of Street Improvements for Bicycle and Pedestrian Mobility - A Multi-City Multi-Approach Exploration [Phase 2]

Principal Investigator: Jenny Liu

This research project explores the economic impacts of bicycle and pedestrian street improvements in the United States using multiple data sources and analytical approaches. Building on studies in New York City and San Francisco, researchers examined ... Read More

Defining and Measuring Equitable Access to Washington Park in Portland, Oregon

Principal Investigator: Lisa Patterson

Co-Investigators: Marisa Zapata , Joe Broach

Photo by Brink Communications Explore Washington Park (EWP) is a 501c3 non-profit that serves as the Transportation Management Association for Washington Park. At 410 acres, Washington Park receives over 3 million visitors each year and is home to ... Read More

Social-Transportation Analytic Toolbox (STAT) for Transit Networks

Principal Investigator: Xiaoyue Cathy Liu

Co-Investigators: Ran Wei , Aaron Golub , Liming Wang

The new Social-Transportation Analytic Toolbox (STAT) for Transit Networks, developed by NITC researchers in a multi-university collaboration, is a dynamic platform that combines Twitter, general transit feed specification (GTFS), and census transpor ... Read More

The E-Bike Potential: How E-Bikes Can Improve Sustainable Transportation

Principal Investigator: John MacArthur

Co-Investigator: Christopher Cherry

The electric bicycle (e-bike) is a recently introduced mode of travel that is rapidly gaining in popularity throughout the United States. The e-bike can offer a cheaper alternative to car travel (Popovich et al. 2014) and can provide users with an ad ... Read More

Bicycle Planning GIS Tool

Principal Investigator: Joe Broach

Although currently only about one percent of US trips are done by bicycle, there is significant geographic variation. Differences across communities, along with much higher cycling rates observed in other places around the world, indicates large pote ... Read More

Contextual Guidance at Intersections for Protected Bicycle Lanes

Principal Investigator: Christopher Monsere

Co-Investigator: Nathan McNeil

Protected, or separated, bike lanes have become increasingly common around the United States. Studies have consistently found that people prefer bike facilities that are separated from traffic, such as off-street paths and protected bike lanes, with ... Read More

Addressing Changing Demographics in Environmental Justice Analysis, State of Practice

Principal Investigator: Aaron Golub

Co-Investigator: Nathan McNeil

This report documents how metropolitan planning organizations (MPO), State departments of transportation (DOT), and other transportation agencies are adapting Environmental Justice (EJ) analysis techniques to understand transportation impacts in comm ... Read More