Analyses of motor vehicle and police-reported crash data reveal that nearly 68 percent of bicycle crashes in Portland, Oregon occur at intersections (PDOT, 2004) which is consistent with national trends (Hunter et al., 1996). Hunter et al. (1996) also found that 12.2% of crashes involving… Read More

With an increased focus on reducing the effects of motor vehicle use on the environment, neighborhood livability, safety, and health, planners, engineers, and policy makers are looking to increase the attractiveness of walking and bicycling. The potential for bicycling as a transportation mode has… Read More

The research consisted of two phases: 1) a synthesis of practice and 2) and analysis of cyclist performance characteristics. The synthesis of current practice reviewed the literature, current engineering design and operational guidance documents, and surveyed the jurisdictions about their current… Read More

Public agencies spend considerable resources collecting information about passenger travel in household travel surveys. These data are valuable for the rich and detailed information they provide, which contribute to regional and statewide travel demand models. These data have utility beyond travel… Read More

Although there is a growing need to access accurate and reliable pedestrian and bicycle data, there is no statewide system to collect data or plan future data collection efforts in the state of Oregon. To address these issues this research conducted a comprehensive review of pedestrian and bicycle… Read More

Oregon is one of the few states that currently charge a commercial truck weight-mile tax (WMT). The Oregon Department of Transportation (ODOT) has developed a data-collection system – Truck Road Use Electronics (TRUE) – to simplify WMT collection. The TRUE system includes a smart phone application… Read More

Climate change is posing unique and unprecedented challenges for the Nation's transportation system. Changing weather patterns and their associated physical, financial, and social impacts are affecting or will affect the way transportation professionals finance, plan, design, construct,… Read More

Research conducted by Kittelson & Associates, Inc., Portland State University, and Toole Design Group Read More

Traditionally, engineering coursework has been delivered in a lecture-based format with accompanying exercises assigned for time outside of class. The activity-based approach to learning aims to keep students engaged in and responsible for their own learning processes. This approach has been shown… Read More

This paper analyzes collision and non-collision incidents that occurred on TriMet’s bus system over a near two-year period. The bus route network was decomposed into stop and line haul segments, and a typology of models was estimated from segment level incident, risk exposure, and roadway feature… Read More

The bulk of the bridge inventory in Oregon was built prior to the current understanding of bridge response and prior to current understanding of the expected earthquake demands. While some bridges are being replaced due to other deficiencies, majority are expected to continue to stay in service for… Read More

In 2010, the Baldock Restoration Group relocated 37 homeless households from the Baldock Rest Area near Wilsonville. Relocated residents included both situationally homeless households (e.g., someone who had lost his job in the recent recession) as well as the chronically homeless (e.g., someone… Read More