Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Adaptive control systems (1)
- Channels (Hydraulic engineering) (1)
- Cycling -- Oregon -- Safety measures (1)
- Electronic traffic controls (1)
- Erosion -- Oregon (1)
-
- Fishways (1)
- Freight and freightage -- Economic aspects (1)
- Freight transportation (1)
- Freight transportation -- Mathematical models (1)
- Oregon. Department of Transportation (1)
- Pedestrians -- Oregon -- Safety measures (1)
- Traffic congestion (1)
- Traffic safety and children -- Oregon -- Portland (1)
- Transportation -- Planning -- Oregon (1)
- Transportation problems (Programming) (1)
- Vehicle routing problem (1)
- Waterways (1)
Articles 1 - 4 of 4
Full-Text Articles in Engineering
Evaluation Of Safe Routes To School Programs: Qualitative And Quantitative Analysis Of Parental Decision-Making, Lynn Weigand, Noreen Mcdonald
Evaluation Of Safe Routes To School Programs: Qualitative And Quantitative Analysis Of Parental Decision-Making, Lynn Weigand, Noreen Mcdonald
TREC Final Reports
In the United States, walking to school declined from 42% of 5-18 year olds in 1969 to 16% in 20011. The US Department of Transportation has responded to this dramatic decrease by funding the Safe Routes to School program for $612 million in SAFETEA-LU. The program’s funding emphasize infrastructure improvements such as completing sidewalks and adding crosswalks by requiring between 70% and 90% of funding be allocated toward infrastructure. However, recent research shows that 2 of 3 children who currently are driven to school, but live close enough to walk, do so because it is more convenient for parents. Currently, …
Factors For Improved Fish Passage Waterway Construction, David N. Sillars, Hamid Moradkhani, Nicholas Tymvios, Trevor D. Smith
Factors For Improved Fish Passage Waterway Construction, David N. Sillars, Hamid Moradkhani, Nicholas Tymvios, Trevor D. Smith
TREC Final Reports
Streambeds are important fish passageways in Oregon; they provide for the necessary habitats and spawning cycles of a healthy fish population. Oregon state law requires that hydraulic structures located in water properly provide fish passage. Increasingly stringent state and federal regulations apply to these fish passageways, and designers must become more cognizant of conditions over a range of flows to accommodate fish movement and avoid expensive structural failure of these passageways. Fish passage structures are built when roads cross streambeds and may include culverts, or bridges. When these structures are built, the streambeds are re-created using a technique called “roughened …
Case Study Evaluation Of Dynamic Traffic Assignment Tools, John Gliebe, Åsa Bergman
Case Study Evaluation Of Dynamic Traffic Assignment Tools, John Gliebe, Åsa Bergman
Urban Studies and Planning Faculty Publications and Presentations
A case study was undertaken in order to evaluate the potential use of dynamic traffic assignment (DTA) tools by Oregon Department of Transportation (ODOT) and its partner agencies. The objectives of this study were to provide insight into the nature of DTA models, to inform the program selection process, and to develop realistic expectations for potential DTA work plans. The overarching goal of this report is to describe the process followed and experiences of the study team in developing and testing DTA network models. Two available DTA programs were selected for in-depth analysis from a preliminary screening of available programs: …
Freight Distribution Problems In Congested Urban Areas: Fast And Effective Solution Procedures To Time-Dependent Vehicle Routing Problems, Miguel A. Figliozzi
Freight Distribution Problems In Congested Urban Areas: Fast And Effective Solution Procedures To Time-Dependent Vehicle Routing Problems, Miguel A. Figliozzi
Civil and Environmental Engineering Faculty Publications and Presentations
Congestion is a common phenomenon in all medium to large cities of the world. Reliability of freight movement in urban areas is an important issue to manufacturing or service companies whose operation is based in just-in-time approaches. These companies tend to provide high value or time sensitive products/services. As congestion increases, carriers face increasing challenges to satisfy their time sensitive customers in an economical way. Route designs or schedules which require long computation times or ignore travel time variations will result in inefficient and suboptimal solutions. Poorly designed routes that lead freight vehicles into congested arteries and streets not only …