27 Results

Improved Pedestrian Safety at Signalized Intersections Operating the Flashing Yellow Arrow

David Hurwitz
Christopher Monsere
In some jurisdictions, protected left-turn phasing has been replaced with the flashing yellow arrow (FYA) for protected/permissive left turns (PPLTs) to reduce delay. However, it is important to have a thorough understanding of the conflict between p ... Read More

Multimodal Data at Signalized Intersections: Strategies for Archiving Existing and New Data Streams to Support Operations and Planning

Christopher Monsere
Kristin Tufte
There is a growing interest in arterial system management due to the increasing amount of travel on arterials and a growing emphasis on multimodal transportation. The benefits of archiving arterial-related data are numerous. This research report desc ... Read More

Refining GreenSTEP: Impacts of Vehicle Technologies and ITS/Operational Improvements on Travel Speed and Fuel Consumption Curves

Kelly Clifton
Alex Bigazzi
This report describes analysis undertaken to establish a method for incorporating traffic operations and ITS strategies into the GreenSTEP model. We first discuss operations impacts on fuel economy and delay from the literature. Then, an investigatio ... Read More

Integrated Multimodal Transportation, Air Quality, and Livability Corridor Study: Measuring, Understanding, and Modeling the Interactions

Miguel Figliozzi
Christopher Monsere , Linda George , Ashley Haire
The Sydney Coordinated Adaptive Traffic System (SCATS) is used to mitigate traffic congestion along urban arterial corridors. Although there has been research on SCATS’ performance, this report combines three different areas of research about SCAT ... Read More

Value of Reliability

Miguel 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 ... Read More

Value of Travel Time Reliability: Commuters' Route Choice Behavior and Study of Tradeoffs - Phase 2

Miguel 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

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 ... Read More

Case Study Evaluation of Dynamic Traffic Assignment Tools

John Gliebe
DEVELOPMENT AND SENSITIVITY TESTING OF ALTERNATIVE MOBILITY METRICS: The Oregon Highway Plan’s (OHP) mobility policies guide various planning and programming activities of the Oregon Department of Transportation (ODOT). Among these activities are O ... Read More

Exploiting a Next Generation ITS Data Warehouse for Improved System Performance and Congestion Monitoring

Kristin Tufte
David Maier
The objective of this project is to build on an existing data archive platform, known as the Portland Oregon Regional Transportation Archive Listing (PORTAL) toward development of next generation performance measurement and congestion reduction tools ... Read More

Fusion and Integration of Arterial Performance Data

Kristin Tufte
Real-time knowledge of system performance enables transportation agencies to manage traffic conditions and keep the public informed of periods of congestion. The ability to accurately measure arterial performance has been limited primarily by the ava ... Read More

Analysis of Travel Time Reliability for Freight Corridors Connecting the Pacific Northwest

Miguel Figliozzi
A new methodology and algorithms were developed to combine diverse data sources and to estimate the impacts of recurrent and non-recurrent congestion on freight movements’ reliability and delays, costs, and emissions. The results suggest that tradi ... Read More

Using Archived ITS Data to Measure the Operational Benefits of a System-wide Adaptive Ramp Metering System

Robert Bertini
Christopher Monsere
A System-Wide Adaptive Ramp Metering (SWARM) system has been implemented in the Portland, Oregon metropolitan area, replacing the previous pre-timed ramp-metering system that had been in operation since 1981. SWARM has been deployed on six major corr ... Read More
‹ Prev Page 2 of 3 Next ›