Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Transportation -- Planning -- Statistical methods (4)
- Pedestrians (2)
- Pedestrians -- Safety measures (2)
- Traffic surveys -- United States (2)
- Trip generation -- United States (2)
-
- Air -- Pollution -- Prevention (1)
- Air quality management (1)
- Bolted joints -- Testing (1)
- Bridge failures (1)
- Bridges -- Design and construction (1)
- Bridges -- Design and construction -- Environmental aspects (1)
- Bridges -- Design and construction -- Specifications -- United States (1)
- Bridges -- Oregon -- Design and construction -- Evaluation -- Planning (1)
- Bridges -- Retrofitting -- Oregon -- Evaluation -- Planning (1)
- Community development (1)
- Concrete -- Transportation (1)
- Concrete Testing -- Recycling (1)
- Earthquake hazard analysis -- Oregon -- Planning (1)
- Earthquake resistant design -- Oregon -- Evaluation -- Planning (1)
- Electric batteries -- Design and construction (1)
- Electrochemistry (1)
- Electronic traffic controls (1)
- Engineering -- Experiments (1)
- Freight transportation (1)
- Freight transportation -- Mathematical models (1)
- Greenhouse gas mitigation (1)
- Gusset plates -- Testing (1)
- Highway capacity (1)
- Household surveys (1)
- Hurricanes -- Environmental aspects (1)
Articles 1 - 18 of 18
Full-Text Articles in Engineering
Evaluation Of Roadway Reallocation Projects, Miguel Figliozzi
Evaluation Of Roadway Reallocation Projects, Miguel Figliozzi
TREC Project Briefs
This NITC study offers a new methodology for evaluating the before-and-after effects of roadway space reallocation projects.
Land Use And Active Travel: A Complex Relationship, Steven R. Gehrke
Land Use And Active Travel: A Complex Relationship, Steven R. Gehrke
TREC Project Briefs
While it’s accepted that mixed-use development promotes active travel, researchers don’t have a consensus on exactly how land use determines people’s travel patterns.
Focusing On Equity In Regional Plans, Kristine M. Williams
Focusing On Equity In Regional Plans, Kristine M. Williams
TREC Project Briefs
Metropolitan planning organizations (MPOs) have long been required to consider the equity implications of their regional transportation plans and processes.
A Practitioner's Guide To Urban Trip Generation, Kristina Marie Currans
A Practitioner's Guide To Urban Trip Generation, Kristina Marie Currans
TREC Project Briefs
In 1976, the Institute of Transportation Engineers (ITE) compiled their first Handbook of guidelines for evaluating development-level transportation impacts. Decades later, these methods are still ubiquitously used across the US and Canada. Only recently, with the third edition of the ITE Trip Generation Handbook, have new data and approaches been adopted. In this study NITC researcher Kristina Currans takes aim at understanding issues inherent in the collection and application of ITE’s data and methods in various urban contexts. This technology transfer guide touches on the main findings from this work.
How To Estimate Pedestrian Demand, Kelly Clifton, Patrick Allen Singleton, Christopher D. Muhs, Robert J. Schneider
How To Estimate Pedestrian Demand, Kelly Clifton, Patrick Allen Singleton, Christopher D. Muhs, Robert J. Schneider
TREC Project Briefs
There is growing support to improve the quality of the walking environment and make investments to promote pedestrian travel. Such efforts often require analytical non-motorized planning tools to estimate levels of pedestrian demand that are sensitive to environmental and demographic factors at an appropriate scale. Despite this interest and need, current forecasting tools, particularly regional travel demand models, often fall short.
To address this gap, Oregon Metro and NITC researcher Kelly Clifton worked together to develop a pedestrian demand estimation tool. For generations, planners have been using statistical models to forecast travel demand, but these models have traditionally been auto-centered. …
Hiding Private Locations By Anonymizing Data, Kelly J. Clifton, Steven R. Gehrke
Hiding Private Locations By Anonymizing Data, Kelly J. Clifton, Steven R. Gehrke
TREC Project Briefs
Researchers explore ways of masking private locations in the interest of making useful data publicly available.
More Urban Form, Fewer Auto Trips, Kelly J. Clifton
More Urban Form, Fewer Auto Trips, Kelly J. Clifton
TREC Project Briefs
Trip generation refers to the number of vehicle trips that are predicted to originate in a given zone. The Institute of Transportation Engineers (ITE) publishes standard trip generation rates for various land use types, but these rates are primarily measured in low-density suburban areas. There is national interest in building data that expands upon the existing ITE trip generation rates to include sites located in a multi-modal context.
In areas that have a more compact urban form, better access to transit and a greater mix of land uses, fewer vehicle trips may be generated there than ITE rates indicate. However, …
Characterization If Li-Air Batteries Influence Of Cathode Degradation: Demonstration Of Progress, Claudia Torres Garibay, Jeremiah Deboever
Characterization If Li-Air Batteries Influence Of Cathode Degradation: Demonstration Of Progress, Claudia Torres Garibay, Jeremiah Deboever
TREC Project Briefs
Li-air batteries are attractive candidates to be used in electric vehicles (EV) due to their high theoretical capacity, which results in an improved range, a requirement to make EV competitive against fossil fuel powered vehicles. However, Li-air battery technology is considered to be far from commercialization, due to its short lifespan. The decomposition of the electrolyte and its effect on cyclablity has been widely studied, no so much the cathode. The presence of undesirable reaction by-products at the cathode that affect the battery performance has been quantified through XRD and SEM. This work will make use of recently reported novel …
Making Concrete From Recycled Materials, Jason Ideker
Making Concrete From Recycled Materials, Jason Ideker
TREC Project Briefs
Making concrete out of recycled concrete aggregate, or RCA, can be a sustainable and cost-saving alternative to other aggregates. However, the quality of concrete made with RCA is dependent on the quality of the recycled material used. OTREC researchers Jason Ideker of Oregon State University and Jennifer Tanner of the University of Wyoming, with graduate student researchers Matthew P. Adams and Angela Jones, sought to determine some of the primary concerns involved with the use of RCA and to arrive at methods of assessing its durability for use in new concrete.
Alkali-silica reaction occurs in concrete over time, causing it …
Making Bridges Outlast Rising Waters, Daniel Cox
Making Bridges Outlast Rising Waters, Daniel Cox
TREC Project Briefs
During Hurricanes Ivan in 2004 and Katrina in 2005, at least 11 highway and railroad bridges along the U.S. Gulf Coast were damaged by wave forces. The spans of these bridges typically rested on bent column supports, and were attached to the supports by a variety of connection methods. Failure of these connections caused bridge spans to be washed away when the water rose high enough to lift them off. To build bridges that can withstand such forces, engineers must be able to estimate the effects the forces will have.
Investigator Daniel Cox of Oregon State University has conducted wave …
Testing And Strengthening Bridge Connections, Christopher Higgins, Peter Dusicka, Michael Scott
Testing And Strengthening Bridge Connections, Christopher Higgins, Peter Dusicka, Michael Scott
TREC Project Briefs
Researchers evaluate and improve the strength of gusset plate connections, essential pieces in bridge design that can fail due to buckling.
Helping Bridges Withstand Hurricane Waves, Daniel Cox
Helping Bridges Withstand Hurricane Waves, Daniel Cox
TREC Project Briefs
A large-scale laboratory model helps researchers determine horizontal and vertical wave forces on a highway bridge superstructure.
Tracking Trucks To Improve Performance, Mecit Cetin, Christopher M. Monsere
Tracking Trucks To Improve Performance, Mecit Cetin, Christopher M. Monsere
TREC Project Briefs
Freight transportation is an important part of Oregon’s economy, and the Oregon Department of Transportation, or ODOT, continually observes the highway system to make sure it is running as smoothly as possible. By monitoring the progress of individual trucks, ODOT can obtain performance metrics such as travel time, travel delays, and origin-destination flows. This information can help identify slow passages or bottlenecks in the highway system. Typical ways of obtaining these metrics, however, may involve purchasing expensive equipment, and may also raise privacy concerns if each truck is required to carry a tracking unit. To avoid these difficulties, Portland State …
Reliable Travel: Clearer Roads, Cleaner Air, Miguel Figliozzi
Reliable Travel: Clearer Roads, Cleaner Air, Miguel Figliozzi
TREC Project Briefs
A project explores the importance of travel-time reliability for evaluating the performance of a road network in terms of emissions, traffic and commuters’ route choices.
Predicting Landslides In Real Time, Michael J. Olsen
Predicting Landslides In Real Time, Michael J. Olsen
TREC Project Briefs
The Oregon Department of Transportation, or ODOT, has an ongoing struggle to maintain public highways against earth movements such as erosion, earthquakes and landslides. An earthquake or landslide can close down a road for days, while highway workers fight to keep supply lines open and repair the damage. Particularly along Oregon’s coastal roads with high sea cliffs, these natural processes are a constant threat to transportation infrastructure. The damage caused by gradual erosion is typically not detectable until there is a landslide or other disaster, costing the state considerable time and money to repair. New technology has the potential to …
Protecting Bridges From Earthquake Damage, Peter Dusicka
Protecting Bridges From Earthquake Damage, Peter Dusicka
TREC Project Briefs
Earthquake damage to bridges can have serious effects on a transportation network. When a bridge is out, the damage can go well beyond what is immediately visible: in addition to the cost of repairing it, the state must deal with short-term and long-term interruptions to traffic. These interruptions can delay repair and construction, as well as impacting post earthquake emergency response and causing the loss of valuable time for commuters and freight. To prevent this situation, older bridges (ones that are past an average construction life of about 50 years) should be retrofitted with stronger materials, especially in earthquake- prone …
Tracking Missing Drivers, James G. Strathman
Tracking Missing Drivers, James G. Strathman
TREC Project Briefs
By understanding driver absenteeism, transit providers can learn to manage it, Portland State University research suggests.
How Can We Best Manage Freeway Congestion?, Robert Bertini, Christopher Monsere
How Can We Best Manage Freeway Congestion?, Robert Bertini, Christopher Monsere
TREC Project Briefs
Researchers from Portland State University evaluate Oregon’s Implementation of System-Wide Adaptive Ramp Metering (SWARM).