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Articles 1 - 10 of 10
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. …
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, …
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 …
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.
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.
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 …