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Articles 1 - 11 of 11
Full-Text Articles in Urban Studies and Planning
Impacts Of Low-Speed Vehicles On Transportation Infrastructure And Safety, Katharine M. Hunter-Zaworski, Linda Cornell
Impacts Of Low-Speed Vehicles On Transportation Infrastructure And Safety, Katharine M. Hunter-Zaworski, Linda Cornell
TREC Final Reports
There are increasing numbers of low-speed electric vehicles (LSVs) on public roadways. These vehicles are designed to be used within protected environments and on roadways with a maximum posted speed of 25 mph. Currently these vehicles are not subject to the same federal requirements for occupant protection as passenger cars. This research project investigated safety standards, operating regulations, and LSV manufacturer materials from sources around the world. The purpose of the research was to determine positive and negative impacts that LSVs, including Neighborhood Electric Vehicles (NEVs) and Medium Speed Electric Vehicles (MSEVs), are likely to have for the Oregon Department …
Trail Planning & Community Service Curriculum, Lynn Weigand
Trail Planning & Community Service Curriculum, Lynn Weigand
TREC Final Reports
The objective of this project was to develop a new trail planning curriculum and conduct a regional trail research project in the Portland metropolitan area. The curriculum was created for a community service-based, University Capstone course at Portland State University (PSU), with Metro (regional government) as the community course partner. Project goals included: Expanding opportunities for undergraduate students to study trail design and planning for transportation and recreational walking and bicycling; Providing practical application of knowledge to a trail planning project through research and data collection on trail use; Raising awareness of bicycle and pedestrian travel among students in disciplines …
Performance Enhancement Of Bridge Bracing Under Service And Extreme Loads, Peter Dusicka, Max Taylor Stephens, Kate Fox-Lent
Performance Enhancement Of Bridge Bracing Under Service And Extreme Loads, Peter Dusicka, Max Taylor Stephens, Kate Fox-Lent
TREC Final Reports
As truck loads continue to get bigger, the demand on many aging bridges increases. Slender steel structural elements widely used in bridge superstructures and braced substructures to resist these loads are built primarily for tension, however, and can buckle under compressive loads. Portland State University associate professor Peter Dusicka set out to develop and demonstrate the concept of retrofitting bridge brace elements with fiber reinforced composites in order to provide restraint against buckling. The advanced materials consisted of a combination of fiber reinforced polymer (FRP) composite pultruded sections and wet lay-up wraps intended to be applied in the field. This …
Analysis Of Bus Collision Incidents Using Transit Its And Other Archived Operations Data, James G. Strathman, Paul Herman Wachana, Steve Callas
Analysis Of Bus Collision Incidents Using Transit Its And Other Archived Operations Data, James G. Strathman, Paul Herman Wachana, Steve Callas
TREC Final Reports
This report analyzes factors contributing to bus operations safety incidents at TriMet, the transit provider for the Portland Oregon metropolitan region. The analysis focuses on 4,631 collision and non-collision incidents that occurred between 2006 and 2009. Empirical analysis of these incidents draws on a wide array of operator-level data recovered by transit ITS technologies in combination with information from TriMet’s human resources, scheduling, and customer relations databases. Incident frequencies are estimated in relation to operators’ demographic characteristics, employment status, assigned work characteristics, service delivery and performance indicators, temporal factors, and customer information. Apart from identifying factors that are empirically related …
Oregon Freight Data Mart, Miguel A. Figliozzi, Robert Bertini
Oregon Freight Data Mart, Miguel A. Figliozzi, Robert Bertini
TREC Final Reports
Increasing freight volumes are adding pressure to the Oregon transportation system. Monitoring the performance of the transportation system and freight movements is essential to guarantee the economic development of the region, the efficient allocation of resources, and the quality of life of all Oregonians. Freight data is expensive to collect and maintain. Confidentiality issues, the size of the datasets, and the complexity of freight movements are barriers that preclude the easy access and analysis of freight data. Data accessibility and integration is essential to ensure successful freight planning and consistency across regional partner agencies and planning organizations. In relation to …
The Boulevard Study: From Arterial To Asset -- Examining The Role Of The Multi-Way Boulevard In Coordinated Transportation And Land Use Planning, Mark L. Gillem
The Boulevard Study: From Arterial To Asset -- Examining The Role Of The Multi-Way Boulevard In Coordinated Transportation And Land Use Planning, Mark L. Gillem
TREC Final Reports
Cities that were once considered the most-desired places to live or for businesses to locate are now seeking ways to unclog their increasingly congested roadways and regain their quality of life. U.S. Department of Transportation Strategic Plan Background Cities across the U.S. that are struggling with congestion resort to remedies that are increasingly difficult to implement. Adding capacity is a more challenging proposition given limited land availability, greater environmental constraints, and fiscal barriers. Replacing individual trips with transit has seen limited success and can typically only be justified at greater levels of density than many communities currently support. Multiway boulevards …
City Design Lecture Series: Linking Transportation And Land Use Planning, Mark L. Gillem
City Design Lecture Series: Linking Transportation And Land Use Planning, Mark L. Gillem
TREC Final Reports
The objective of this multidisciplinary educational program was to host a lecture series that will inform area professionals, students, and the broader public about the need to consider transportation and land use strategies in concert that can jointly create more livable cities with enhanced safety, reduced congestion, greater mobility choices, and more housing variety. This lecture series meets the Oregon Transportation Research and Education Consortium’s (OTREC) goal of encouraging “… multidisciplinary educational programs and experiential learning across disciplines in the transportation field.” The lecture series brought a variety of nationally known experts in the fields of transportation planning, urban design, …
Financing Mechanisms For Capacity Improvements At Interchanges, James G. Strathman, Elizabeth Simmons
Financing Mechanisms For Capacity Improvements At Interchanges, James G. Strathman, Elizabeth Simmons
TREC Final Reports
This report examines the use of alternative local financing mechanisms for interchange and interchange area infrastructure improvements. The financing mechanisms covered include transportation impact fees, tax increment financing, value capture financing, local improvement districts, transportation corporations, state infrastructure banks, local option transportation taxes, fair share mitigation, and transportation concurrency. The financing alternatives are assessed in the context of Interchange Area Management Plans, which are required by the Oregon Transportation Commission, as well as in the context of the Oregon Department of Transportation’s responsibilities under the state’s Transportation Planning Rule.
Overlooked Density: Re-Thinking Transportation Options In Suburbia, Nico Larco
Overlooked Density: Re-Thinking Transportation Options In Suburbia, Nico Larco
TREC Final Reports
Suburban multifamily housing is an often overlooked housing typology that is the fasted growing housing market in the country and holds strong potential for achieving smart growth goals in suburbia. This housing type is ubiquitous throughout all regions in the nation, is a widespread example of density in suburbia, and is typically located next to commercial uses. The proximity between suburban multifamily housing and commercial uses creates the potential for nodes of concentrated activity, mixed use, and the possibility of substantial non-auto transport in suburbia. While this potential exists, the design of this housing type often follows an enclaved pattern …
Bicycle And Pedestrian Design Curriculum Expansion, Lynn Weigand
Bicycle And Pedestrian Design Curriculum Expansion, Lynn Weigand
TREC Final Reports
This project broadened course offerings on bicycle and pedestrian transportation by redesigning and expanding an existing, three credit undergraduate/graduate course into a five-credit course that includes an applied lab component. The course was open to graduate and undergraduate students in planning and engineering programs. The PI (Lynn Weigand, Ph.D., adjunct faculty) and Mia Birk, adjunct faculty course instructor, developed the course with the following learning objectives:
- learn principles of bicycle and pedestrian facility design;
- understand integration of bicycle and pedestrian facilities within the right-of-way;
- understand basic transportation research and data collection methods; and
- apply course content through project work.
The …
Understanding School Travel: How Residential Location Choice And The Built Environment Affect Trips To School, Yizhao Yang, Marc Schlossberg, Robert Parker, Bethany Johnson
Understanding School Travel: How Residential Location Choice And The Built Environment Affect Trips To School, Yizhao Yang, Marc Schlossberg, Robert Parker, Bethany Johnson
TREC Final Reports
This project investigates issues related to parents’ decisions about children’s school transportation. This has become an important area of research due to the growing concerns that increased reliance on private automobile in school travel has led to adverse health impacts on children and negative impacts on environment. This study examines school transportation in the context of where families live and how families make decisions about school travel in the process of choosing their residence.
Using a middle-sized school district in Oregon State, we conducted a 5500-household survey and a number of interviews and focus groups. The study shows that parents …