TREC research addresses complex transportation problems by drawing on multiple disciplines, including engineering, planning, economics and design, from across the Portland State University campus. Use the search box at right to search for a specific project.

Research Highlights

Connecting people to places: spatiotemporal analysis of transit supply using travel-time cubes

Steven Farber
Transit planning traditionally emphasizes the spatial dimension of accessibility; networks are built to bridge locations in the city with the assumption that the provision of spatial connectivity is equivalent to providing people with access to their destinations. However, often underrepresented in transit analyses, is that travel time, not network proximity, is the fundamental unit of influence over people's travel behavior. It is the time lost in travel that drives whether or not people will… Read More

Subcontract: NCHRP 17-115 Guide for Marked Crosswalk Design, Spacing, Placement, and Safety

Sirisha Kothuri Nathan McNeil
Project Lead: University of North Carolina at Chapel Hill | Project PI: Sarah O’Brien | PSU team PI: Sirisha Kothuri | In a project funded by the National Cooperative Highway Research Program (NCHRP), Portland State University is partnering with the University of North Carolina at Chapel Hill and Safe Streets to develop guidance to help agencies identify the appropriate crosswalk spacing to ensure that people can cross arterials and other streets at safe crossing locations, and that… Read More