Document Type

Post-Print

Publication Date

1-2011

Subjects

Trucking -- Environmental aspects -- Interstate 5, Traffic congestion -- Oregon -- Portland Metropolitan Area -- Evaluation, Freight and freightage -- Economic aspects

Abstract

Research was undertaken to develop multicriteria tools for measuring and analyzing the impact of recurring and nonrecurring congestion on freight. Unlike previous studies, this work used several distinct data sources to analyze the effects of congestion on I-5 in the Portland, Oregon, metropolitan area: Global Positioning System data from commercial trucks, Oregon Department of Transportation corridor travel time loop data, and incident data. A new methodology and algorithms combine these data sources and estimate the impact of recurrent and nonrecurrent congestion on reliability and delays, costs, and emissions of freight movements. The results suggest that traditional traffic sensor data tend to underestimate the impact of congestion on travel times and variability of commercial vehicles. Congestion is detrimental not only for carriers' and shippers' costs but also for the planet because of increases in greenhouse gas emissions and for the local community because of increases in oxides of nitrogen, particulate matter, and other harmful pollutants. The developed methodology can provide useful freight operation and performance data for the freight community, transportation decision makers, and other transportation stakeholders.

For more information: http://archives.pdx.edu/ds/psu/11487

Description

This is the author's manuscript copy of a paper presented at the 90th Annual Meeting of the Transportation Research Board January 23–27, 2011.

Persistent Identifier

http://archives.pdx.edu/ds/psu/16821

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