The purpose of this study was to gain a better understanding of how equipment replacement decisions are supported with data collection and quantitative models at state DOTs, and to determine if models found in the research literature offer any better decision support when applied to realistic fleet… Read More

It is well established that vehicles powered by carbon-based fuels (e.g. gasoline, diesel) have a negative impact on air quality, especially in urban centers. Traditionally, air quality conformity studies analyze the macroenvironmental impact of transportation corridors, as they relate to regional… Read More

This project will help demonstrate how sustainable ("green") streets contribute to the well-being of a community, including the physical and mental health of older and younger adults, along with the environment and economy. The project will collect data in Portland, OR neighborhoods to answer the… Read More

As OTREC consortium members prepare to enhance transportation-related professional development programs, both through new course offering sand enhancing existing courses, there is a clear need to develop a basic understanding of the needs of the professionals' community and types of courses that… Read More

The built environment is an important factor in enabling people of all ages to be physically active on a daily basis whether for recreation or carrying out the tasks of everyday life. The extent to which a community has a system of well-maintained sidewalks and bike routes, safe means to cross… Read More

This project seeks to develop a multi-faceted study of a wide range of US communities and their experiences in adopting and implementing land use policies and implementation tools that support active living. The essential aim is to develop an understanding of how to promote reformation of… Read More

The Highway Safety Manual (HSM) was published by the American Association of State Highway and Transportation Officials (AASHTO) in the spring of 2010. Volume 2 (Part C) of the HSM includes safety predictive methods which can be used to quantitatively estimate the safety of a transportation… Read More

This study investigated potential impacts of climate change on travel disruption resulting from road closures in two urban watersheds in the Portland metropolitan area. We used ensemble climate change scenarios, a hydrologic model, stream channel survey, a hydraulic model, and a travel forecast… Read More

To help implement the Growth Concept, Metro’s Regional Travel Options (RTO) Program works to increase awareness of non-SOV alternatives and increase the provision of those alternatives. The program complements other strategies, including land use policies and infrastructure investment. The most… Read More

The Oregon Department of Transportation and Portland State University evaluated the seismic vulnerability of state highway bridges in western Oregon. The study used a computer program called REDARS2 that simulated the damage to bridges within a transportation network. It predicted ground motions… Read More

Final report can be found online at: http://www.dot.state.mn.us/guidestar/2006_2010/vii/ConceptofOperations.pdf Appendix A (Background of Mileage-Based User Fees) describes the various approaches to and prior experiences with mileage-based user fees demonstrations in the U.S. and other… Read More

This report reviews the existing state of the art and also the state of the practice of freight performance measurement. Most performance measures at the state level have aimed at evaluating highway or transit infrastructure performance with an emphasis on passenger transportation. Freight… Read More