Seattle Center City Alley Infrastructure Inventory and Occupancy Study 2018

The Supply Chain and Transportation Logistics (SCTL) Center at the University of Washington conducted an alley inventory and truck load/unload occupancy study for the City of Seattle. Researchers collected data identifying the locations and infrastructure characteristics of alleys within Seattle’s One Center City planning area. The resulting alley database includes GIS coordinates for both ends of each alley, geometric and traffic attributes, and photos. The researchers developed alley management recommendations to promote safe, sustainable, and efficient goods delivery and pick-up.

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I-35 FRATIS Impacts Assessment

This project evaluated the impacts of roadway performance information delivery efforts on freight operations in Texas. A freight advanced traveler information system (FRATIS) was deployed in the form of the I-35 Traveler Information during Construction (TIDC) system in Dallas, Texas, in association with major reconstruction work on I-35. The evaluation focused on the impacts of delivering the TIDC information to trucking companies. Both participating trucking companies reported receiving benefit from the construction delay information.

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Confounding Factors of Commercial Motor Vehicles in Safety Critical Events

When determining the causes of freight-related accidents, researchers need to disentangle the complex interactions among a range of causal and confounding factors, such as hours of service, time of day, traffic density, roadway type, environmental conditions, and driver behavior and characteristics. This study sought to uncover relationships between driver hours of service and a set of potential confounding factors related to time of day.

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NCHRP 08-98: Guide for Identifying, Classifying, Evaluating, and Mitigating Truck Freight Bottlenecks

The demand for truck transportation increases alongside growth in population and economic activity. As both truck and passenger traffic outstrip roadway capacity, the result is congestion, which the freight community experiences as truck bottlenecks. This NCHRP project produced a Guidebook that provides state-of-the-practice information to transportation professionals on practices and measures for identifying, classifying, evaluating, and mitigating truck freight bottlenecks. The intent is to help decision-makers in developing cost-effective solutions to address different types of truck freight bottlenecks.

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Food Distribution Supply Chain Data Collection: Supply Chain Firm Interviews and Truck Counts

In contrast to small food distributors, large grocery store firms and food distributors use larger trucks, with a more diverse truck fleet that travels longer distances, travels more highway miles than local street miles, and travels a larger variety of routes. Smaller food distributors use smaller trucks that travel shorter routes and mostly in urban areas, with less highway driving. Both types of food distribution firms place importance on reducing fuel use and emissions. However, their differences in operating characteristics influence their experiences with and ability to use natural gas vehicles. This information is important to policy makers in devising new alternative fuel policies and programs.

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Wheat Supply Chain Data Collection

As the Washington State Department of Transportation’s (WSDOT) interest in developing a statewide freight model has grown, so too has the need to better understand potential responses of major industries to different policy and market scenarios aimed at reducing freight emissions. This research sought to understand the wheat supply system and its transportation characteristics, as well as potential wheat suppliers’ responses to changes in policy and market conditions, particularly the adoption of alternative fuels.

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