OTREC’s broad research program addresses complex transportation problems by drawing on multiple disciplines, including engineering, planning, economics and design, at our partner universities and beyond. The combined expertise allows OTREC to explore ways to move people and goods sustainably. Research projects also address broader transportation initiatives designed to investigate and build research capacity. Check out the featured projects below or use the search box at right to browse research or search for a specific project.
How well do bike boxes at intersections work?
While bicycle commuting has increased 145 percent over 10 years in Portland, many residents limit their cycling because of traffic safety concerns. Most crashes happen at intersections, many as vehicles make right turns into cyclists. Portland’s bike boxes were designed to address this problem. Portland State University’s Jennifer Dill and Chris Monsere looked at the bike boxes’ potential to reduce conflicts and measured drivers’ and cyclists’ impressions of the traffic control devices, which hadn’t been used widely elsewhere in the United States.
Read more: Evaluation of Bike Boxes at Signalized Intersections
Durability of Recycled Concrete Aggregates in New Concrete
Public demand for recycled concrete aggregate continues to rise, but there are many barriers to its increased use, including the lack of technical data on long-term durability and the potential for alkali-silica reaction (ASR). In this project, Oregon State University’s Jason H. Ideker researches methods that can detect the potential for ASR in recycled concrete pavement and generates data needed for the material to gain wider acceptance and use.
Read more: Durability Assessment of Recycled Concrete Aggregates for use in New Concrete