Research Publications

Publication Features

Paper
Published:
2021
Authors: Dr. Giacomo Dalla Chiara, Fiete Krutein, Dr. Andisheh Ranjbari, Dr. Anne Goodchild

As e-commerce and urban deliveries spike, cities grapple with managing urban freight more actively. To manage urban deliveries effectively, city planners and policy makers need to better understand driver behaviors and the challenges they experience in making deliveries. In this study, we collected data on commercial vehicle (CV) driver behaviors by performing ridealongs with various logistics carriers.

Paper
Published:
2021
Authors: Caleb Diehl, Dr. Andisheh Ranjbari, Dr. Anne Goodchild

With rapid growth in on-demand delivery, ridehailing, and shared mobility use, cities are observing dramatic increases in demand for curbspace. In response, cities and private companies have proposed a diverse range of structural, policy and technology solutions to manage the curb lane more efficiently.

Paper
Published:
2021
Authors: Şeyma Güneş, Dr. Anne Goodchild, Chelsea Greene Venu Nemani

With ongoing population growth and rapid development in cities, the demand for goods and services has seen a drastic increase. Consequently, transportation planners are searching for new ways to better manage the flow of traffic on existing facilities, and more efficiently utilize available and unused capacity. In this research, a lane management strategy that allows freight vehicles to use bus-only lanes is empirically evaluated in an urban setting.

Student Theses and Dissertations
Published:
2021
Authors: Romana Haque Suravi

Electric vehicles, one of the emerging modes of transportation, are at the forefront of sustainable mobility. In the past years, there has been a rapid rise in EVs, both as private and public transportation modes. Private users are influenced by multiple factors while choosing electric cars as their travel modes. Among them, policy and infrastructure are deemed to be the main influencers globally. These policies and infrastructures vary in different cities.

Technical Report
Published:
2021
Authors: Gabriela Girón-Valderrama, Dr. Anne Goodchild

Seattle now ranks as the nation’s sixth-fastest growing city and is among the nation’s densest. As the city grows, so do truck volumes—volumes tied to economic growth for Seattle and the region as a whole. But many streets are already at capacity during peak hours and bottleneck conditions are worsening.

Student Theses and Dissertations
Published:
2021
Authors: Caleb Diehl

In recent years, e-commerce has dramatically increased deliveries to residential areas. The rise in delivery vehicle activity creates externalities for the transportation system, including congestion, competition for parking space, and emissions. Common carrier lockers have emerged as a way to manage these effects by consolidating deliveries, but they remain largely untested in the United States. This thesis examines the effects of a common carrier locker placed in a residential building in downtown Seattle, Washington. An experimental design with on-street data tests the effect of the locker on dwell times and time that delivery people spend in the building. Data collected by the locker provider gives insight into the e-commerce behavior patterns of residents. Finally, a simulation model was constructed to obtain the optimal configuration of box sizes in similar lockers. 

Paper
Published:
2021
Authors: Dr. Ed McCormack Mairin McKnight-Slottee, Chang-Hee Christine Bae

A central theme of U.S. transportation planning policies is to reduce single-occupancy vehicle (SOV) trips and promote transit and non-motorized transportation by coordinating land-use planning and transportation demand management (TDM) programs. Cities often implement TDM programs by intervening with new development during the municipal permit review process.

Student Theses and Dissertations
Published:
2021
Authors: Haena Kim

This dissertation aims to provide insights and data-driven approaches to support freight plans in various cities around the globe with a focus on urban freight deliveries. To accomplish this goal, this dissertation first proposes to discover the current delivery process at the final 50 feet by creating value stream maps that summarize the flow of delivery activities and times, time variations between activities. The map will be based on the data collected from five freight-attracting buildings in downtown Seattle. Secondly, this research explores contributing factors associated with dwell time for commercial vehicles by building regression models. Dwell time, in this study, is defined as the time that delivery workers spend performing out-of-vehicle activities while their vehicle is parked. Finally, this dissertation predicts total time spent at the final 50 feet of delivery, including dwell times and parking-related times through discrete event simulations for various “what if” delivery scenarios.

Technical Report
Published:
2021
Authors: Urban Freight Lab

As one of the nation's first zero-emissions last-mile delivery pilots, the Seattle Neighborhood Delivery Hub serves as a testbed for innovative sustainable urban logistics strategies on the ground in Seattle's dense Uptown neighborhood.

Paper
Published:
2021
Authors: Dr. Andisheh Ranjbari Xiao Wen, Fan Qi, Regina R. Clewlow, Don MacKenzie

Mobility services including carsharing and transportation network company (TNC) services have been growing rapidly in North America and around the world. Measuring the effects of these services on traveler behavior is challenging because the results of any such analysis are sensitive to how (1) outcomes are measured and (2) counterfactuals are constructed.

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