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Urban Freight Lab

Publication Type: Paper

Paper

Effect of Tsunami Damage on Passenger and Forestry Transportation in Pacific County Washington

 
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URL: https://doi.org/10.3141/2604-11
Publication: Transportation Research Record: Journal of the Transportation Research Board
Volume: 2604 (1)
Pages: 88-94
Publication Date: 2017
Summary:

The outer coast of Washington State is exposed to significant seismic and tsunami hazards. A Cascadia Subduction Zone (CSZ) event is expected to cause high earthquake intensities and tsunami inundation resulting in considerable infrastructure loss, inundation of developed land, and degraded functioning of coastal communities.

One area of particular concern is Pacific County, located in southwest Washington, where over 85% of the population is expected to experience severe shaking intensities.

This paper establishes the pre-disaster passenger and freight transportation patterns and the damaged post-disaster road network in Pacific County. The hazard used in the analysis is the CSZ magnitude 9.1 earthquake and resulting tsunami. Passenger travel is compared to forestry travel along the following characteristics: overall change in travel distance, percentage of trips that are longer, the percentage of trips that are no longer possible, and the distributions of travel distance.

Because passenger and freight travel have different purposes and patterns, understanding how they are affected differently can serve as a foundation for community-based disaster recovery planning to increase community resilience to earthquakes and tsunamis.

Authors: Dr. Anne Goodchild, Maura Rowell
Recommended Citation:
Rowell, Maura, and Anne Goodchild. "Effect of Tsunami Damage on Passenger and Forestry Transportation in Pacific County, Washington." Transportation Research Record 2604, no. 1 (2017): 88-94.
Paper

Logistics Sprawl: Differential Warehousing Development Patterns in Los Angeles and Seattle

 
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URL: https://doi.org/10.3141/2410-12
Publication: Transportation Research Record: Journal of the Transportation Research Board
Volume: 2410
Pages: 105-112
Publication Date: 2014
Summary:

The warehousing industry experienced a period of rapid growth from 1998 to 2009. This paper compares how the geographic distribution of warehouses changed in both the Los Angeles and Seattle Metropolitan Areas over that time period. These two west coast cities were chosen due to their geographic spread and proximity to major ports as well as their difference in size. The phenomenon of logistics sprawl, or the movement of logistics facilities away from urban centers, which has been demonstrated in past research for the Atlanta and Paris regions, is examined for these two areas. The weighted geometric center of warehousing establishments was calculated for both areas for both years, along with the change in the average distance of warehouses to that center, an indicator of sprawl. We find that between 1998 and 2009, warehousing in Los Angeles sprawled considerably, with the average distance increasing from 25.91 to 31.96 miles, an increase of over 6 miles. However in Seattle, the region remained relatively stable, showing a slight decrease in average distance from the geographic center. Possible explanations for this difference are discussed.

Authors: Dr. Anne Goodchild, Laetitia Dablanc, Scott Ogilvie
Recommended Citation:
Dablanc, Laetitia, Scott Ogilvie, and Anne Goodchild. "Logistics sprawl: differential warehousing development patterns in Los Angeles, California, and Seattle, Washington." Transportation Research Record 2410, no. 1 (2014): 105-112. 
Paper

Crane Double-Cycling in Container Ports: Planning Methods and Evaluation

 
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URL: https://doi.org/10.1016/j.trb.2007.02.006
Publication: Transportation Research Part B: Methodological
Volume: 41(8)
Pages: 875-891
Publication Date: 2007
Summary:

The Clean Trucks Program is a Clean Air Action Plan initiative currently being adopted by the Ports of Los Angeles and Long Beach. This paper examines the Clean Trucks Program’s current requirements and estimates the impact on terminal operations. Using terminal operations data supplied by three terminal operating companies, we conduct a simple queuing analysis and present a regression model that allows us to consider the potential impact of the policy changes.

While this paper does not estimate the impact at a specific terminal, we consider order of magnitude effects. While the program itself does not require terminal operations changes, the program will modestly increase incentives to improve operational efficiency outside the terminal and reduce terminal gate processing time. It will also require technology that could be used for further operational changes.

We show, however, that unless gate time improvements are matched with these operational improvements in the terminal, they will only move the delay inside the terminal and not reduce total terminal time.

Our research considers the impact of the Clean Trucks Program on the Ports of Los Angeles and Long Beach, but similar concerns are driving changes at ports around the globe.

Authors: Dr. Anne Goodchild, C.F. Daganzo
Recommended Citation:
Goodchild, A.V., and C.F. Daganzo. “Crane Double Cycling in Container Ports: Planning Methods and Evaluation.” Transportation Research Part B: Methodological, vol. 41, no. 8, 2007, pp. 875–891., doi:10.1016/j.trb.2007.02.006.