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.

Research Highlights

Socio-economic Effect of Vehicle Mileage Fees, Phase 2

Who pays more with vehicle mileage fees?

Decreasing gas tax revenue means Oregon needs another way to pay for its roadway system. What would the effects be on poor and rural populations if the state switched to a tax based on miles driven? Oregon State University’s B. Starr McMullen and Lei Zhang found that, as the price of gasoline increases, the new tax system would cost the poorest people less than a tax pegged to the cost of gas.

Rural drivers would pay slightly less under a vehicle-mile tax than under the gasoline tax, while urban drivers would pay slightly more. This research suggests that a vehicle-mile tax wouldn’t keep people from buying more fuel-efficient vehicles.


Read more: Socio-economic Effect of Vehicle Mileage Fees, Phase 2

Durability Assessment of Recycled Concrete Aggregates for use in New Concrete

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

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OTREC by the Numbers

  • Total value of projects funded: $12.2 million
  • Number of projects funded: 153
  • Number of faculty partners: 98
  • Number of external partners participating in OTREC: 46

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