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
Building Planner Commitment: Are Oregon’s SB 1059 & California’s SB 375 Models for Climate-Change Mitigation?
Keith Bartholomew Reid Ewing
Oregon’s Sustainable Transportation Initiative (SB 1059) and California’s Sustainable Communities Act (SB 375) have made them the first states in the nation to try and reduce greenhouse gas (GHG) emissions using the transportation-planning process. Evaluating how these pioneering laws have changed local planning processes – as well as plans themselves – in each state provides insight into the laws’ effectiveness at changing development patterns in a way that reduces GHG emissions, without…
Read More
Rethinking Streets for Physical Distancing
Marc Schlossberg Rebecca Lewis
Reallocating space on streets to accommodate new uses – particularly for walking, biking, and being – is not new. However, COVID-era needs have accelerated the process that many communities use to make such street transitions. A few overlapping phenomena quickly became clear during the early days of COVID: a need to remain physically distanced from others outside our immediate household; a need for more outdoor space close to home in every part of every community to access and enjoy; a need for…
Read More


