253 Results
Application of WIM Data for Improved Modeling, Design, and Rating
Christopher Monsere
Christopher Higgins , Andrew Nichols
The objectives of this research are to: 1.) collect, sort, filter, and archive WIM data to permit development of long-term continuous records of high-quality WIM data and; 2.) use the WIM data archive to monitor WIM sensor health, develop loads for a ...
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Evaluation of Safe Routes to School Programs: Qualitative and Quantitative Analysis of Parental Decision-Making
Lynn Weigand
Noreen McDonald
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 ...
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A Study of Headway Maintenance for Bus Routes: Causes and Effects of "Bus Bunching" in Extensive and Congested Service Areas
Miguel Andres Figliozzi
Gerardo Lafferriere , Wu-chi Feng
A healthy and efficient public transit system is indispensable to reduce congestion, emissions, energy consumption, and car dependency in urban areas. The objective of this research is to 1) develop methods to evaluate and visualize bus service relia ...
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Real-time change and damage detection of landslides and other earth movements threatening public infrastructure
Michael Olsen
Geologic hazards such as coastal erosion, landslides, seismic loading, etc. constantly threaten public highway
construction and maintenance. Repeat surveys using terrestrial laser scanning (TLS, ground-based LiDAR) enable rapid
3D data acquisition ...
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Contextual Influences on Trip Generation
Kelly Clifton
This study examines the ways in which urban context affects vehicle trip-generation rates across a variety of land uses. An establishmentintercept travel survey was administered at 78 establishments in the Portland, OR, region during the summer of 20 ...
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The Relationship Between VMT and Economic Activity
B. Starr McMullen
Vehicle miles traveled (VMT) in the U.S. have exhibited an upward trend over time similar to that observed for gross domestic product (GDP) and personal income (PI). While conventional wisdom suggests that economic growth leads to more driving and th ...
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Value of Reliability
Miguel Andres Figliozzi
David Levinson
Travel-time variability is a noteworthy factor in network performance. It measures the temporal uncertainty experienced by users in their movement between any two nodes in a network. The importance of the time variance depends on the penalties incurr ...
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Value of Travel Time Reliability: Commuters' Route Choice Behavior and Study of Tradeoffs - Phase 2
Miguel Andres Figliozzi
David Levinson , Kathleen Harder
The issue of travel time reliability is becoming more critical for the movement of people and freight. In order to examine issues related to the value of travel time reliability, we plan to test drivers' preferences for alternate commuter r ... Read More
Hurricane Wave Forces on Highway Bridge Superstructure: Psuedo-dynamic Testing for Bridge Subassembly
Daniel Cox
Tim Maddux
Many bridges along the Gulf Coast of the United States were damaged by recent hurricanes, and many more are susceptible to similar damage. This research examines the structural performance of common connection details used to anchor prestressed concr ...
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Seismic Hazard Assessment of Oregon Highways
Peter Dusicka
John Gliebe
This research project developed a seismic risk assessment model along the major truck routes in Oregon. The study had adopted federally developed software tools called Risk for Earthquake Damage to Roadway Systems (REDARS2) and HAZUS-MH. The model wa ...
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Climate Change Impact Assessment for Surface Transportation in the Pacific Northwest and Alaska
John MacArthur
Miguel Andres Figliozzi , Jason Ideker , Phillip Mote , Ming Lee
The states in the Pacific Northwest and Alaska region share interconnected transportation networks for people, goods, and services that support the regional economy, mobility, and human safety. Regional weather has and will continue to affect the phy ...
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Exploratory Methods for Truck Re-identification in a Statewide Network Based on Axle Weight and Axle Spacing Data to Enhance Freight Metrics: Phase 2
Christopher Monsere
Mecit Cetin , Andrew Nichols
Vehicle re-identification methods can be used to anonymously match vehicles crossing two different locations based on vehicle attribute data. This research builds upon a previous study and investigates different methods for solving the re-identificat ...
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