Research Projects | Transportation Research and Education Center

Livability Performance Metrics for Transit

Principal Investigator: Marc Schlossberg

Co-Investigators: Jennifer Dill , Nico Larco

This project sought to understand the relationship between urban form, transit service characteristics, and ridership measured at the stop level. Most previous work in this area has looked at these issues separately, by either linking system performa ... Read More

Transit Bus Fleet Management and Optimization Models Addressing New Engine Technologies and Emissions Constraints

Principal Investigator: Miguel Andres Figliozzi

Co-Investigator: Ashley Haire

Due to recent budget and fiscal constraints, it is ever more imperative for transit agencies to manage their fleets in an optimal way. Fleet data have consistently shown that bus operational and maintenance (O&M) per-mile costs increase as buses age. ... Read More

A Study of Headway Maintenance for Bus Routes: Causes and Effects of "Bus Bunching" in Extensive and Congested Service Areas

Principal Investigator: Miguel Andres Figliozzi

Co-Investigators: Gerardo Lafferriere , Wu-chi Feng

A healthy and efficient public transit system is indispensable to reduce congestion, emissions, energy consumption, and car dependency in urban areas. The objective of this research is to 1) develop methods to evaluate and visualize bus service relia ... Read More

Extraboard Management

Principal Investigator: James Strathman

This paper examines extraboard operations and management at TriMet, the transit provider for the Portland Oregon metropolitan area. The extraboard consists of a pool of operators who fill open work resulting from absences and other causes. The paper ... Read More

Rural Transit in Oregon: Current and Future Needs

Principal Investigator: Jennifer Dill

Co-Investigator: Margaret Neal

The purpose of the research reported was to identify the current status and needs for general public transportation in Oregon’s rural areas, as well as opportunities and barriers (e.g., funding, governance issues, and leadership) to expanding servi ... Read More

Needs, Costs, and Funding Alternatives for Transportation Services for Older Adults and People with Disabilities in Oregon

Principal Investigator: Jennifer Dill

Co-Investigator: Margaret Neal

Portland State University’s Institute on Aging and Center for Transportation Studies, along with the Population Research Center, were contracted by the Oregon Department of Transportation (ODOT), via the Association of Counties, to project the tran ... Read More

Travel Choices at TransitOriented Developments: Survey Results from Portland’s Eastside

Principal Investigator: Jennifer Dill

This report presents results from surveys of residents at several transit-oriented developments (TODs) in the cities of Portland and Gresham, along the MAX blue line between downtown Portland and Gresham. The research complements survey work done ... Read More