Skip to content
Article

The Freight of the West

 
Download PDF  (0.64 MB)
Publication: Thinking Cities
Volume: December 2017
Pages: 82-85
Publication Date: 2017
Summary:

More than 80 percent of Americans have purchased goods online and, in 2016, more than 8 percent of all retail sales in the U.S. took place online. The growth of ecommerce is putting increasing pressure on local governments to rethink how they manage street curb parking and alley operations for trucks and other delivery vehicles. It is also forcing building developers and managers to plan for the influx of online goods.

To develop practical solutions to these problems, in 2016 the University of Washington launched the Urban Freight Lab (UFL), a partnership between private and public industry stakeholders. The UFL provides a place for companies and public agencies to work together to develop and ground-test low-cost, promising solutions to deliver these goods while maintaining livability and economic vitality.

As part of this research effort, a three-year strategic research partnership with the City of Seattle Department of Transportation (SDOT) has been established to advance understanding of urban goods movement in support of the City’s goals for safe, predictable and efficient goods movement and economic vibrancy.

By entering into a long-term strategic partnership with the university and industry, SDOT demonstrated its interest in developing innovative solutions to achieve their policy goals. The city’s willingness to pilot test and potentially adopt solutions that provided both public and private good was essential in attracting private sector firms to engage fully in the work.

The Urban Freight Lab

In 2016, the Urban Freight Lab recruited founding industry members from Charlie’s Produce, Costco Wholesale, Nordstrom, UPS, and the United States Postal Service (USPS) to develop solutions to improve the way goods are delivered in the urban environment.

Private sector members of the Urban Freight Lab at the University of Washington, in partnership with SDOT, are using a systems engineering approach to solve delivery problems that overlap the spheres of control of the city and business sector.

The Lab has created a multi-year strategic research plan with principles and innovative approaches to produce evidence-based improvement strategies.

The role of the Urban Freight Lab is to be a living laboratory where potential solutions are generated, evaluated, and then pilot-tested on real city streets. Members provide clear and open input as to whether proposed solutions are sustainable in their and other firms’ business models.

The Final 50 Feet

The Urban Freight Lab and its members have defined and focused on the Final 50 Feet; the urban supply chain segment that begins where delivery vehicles park at the curb, alley or in a building’s freight parking space. It tracks the delivery process inside buildings and ends at the receipt of goods by the receiver. The Final 50 Feet concept represents the first time that the Lab have identified the importance of analyzing deliveries moving along the street grid and in cities’ vertical space (office, hotel, retail and residential towers) as a unified goods delivery system.

Development of the Final 50 Feet concept is the necessary first step in defining rigorous, goal-oriented improvement teams that can take coordinated action to reduce truck trips, delivery delays, cost, emissions, and improve delivery service to tenants and consumers. It provides them with the ability to analyze and improve the process flows meaningfully from the beginning-to-end of the last piece of the urban goods system.

The Urban Freight Lab members and SDOT have identified two priority goals, with both public and private benefits, for the 2017-2020 research partnership:

  1. Reduce the number of failed first delivery attempts. The failed first delivery can be as high as 15 percent. Benefits of reducing failed first deliveries include:
    • Improve urban online shoppers’ experiences and protect retailers’ brands;
    • Cut business costs for the retail sector and logistics firms;
    • Lower traffic congestion in cities, as delivery trucks could make up to 15 percent fewer trips while still completing the same number of deliveries.
  2. Reduce dwell time. The time a truck is parked in a load/ unload space. There are both public and private benefits to reaching this goal, including:
    • Lower costs for delivery firms, and therefore potentially lower costs for their customers;
    • Better utilization of public and private truck load/unload spaces;
    • Less congestion, as spaces turn over more quickly.

Overview of the Innovative Approaches Taken to Identify and Quantitatively Assess the Final 50 Feet of the Urban Goods Delivery System

Building the first comprehensive database of urban off-street infrastructure for delivery and pick-up operations

The urban goods delivery system includes both public and private facilities. While on-street parking facilities are well documented in Seattle’s databases, facilities out of the public right of way (i.e. privately held) are not. SCTL research assistants, developed a ground-truthed data collection method to build a comprehensive database inventory, capturing geospatial locations and documenting the visible features of all private freight parking infrastructure in five urban centers in the Seattle area.

For this task, the team collaborated with one of the private carrier members of the Urban Freight Lab to further improve the accuracy of the data collection method. Carrier drivers with deep knowledge of city routes and infrastructure, review the closed door locations.

This review allowed the Lab to rule out 98 percent (206) of the locations behind closed doors, reducing uncertainty in the final database from 38 percent to less than 1 percent.

Researchers found that 87 percent of buildings in the City’s dense urban centers are completely reliant on nearby public commercial vehicle load zones (CVLZs) and alley truck load/unload spaces to receive goods deliveries. These buildings do not have underground or adjacent freight bays on their property.

Building a delivery process flow for delivery inside the building environment

The Lab created detailed process flow maps of the Final 50’ in and around five prototype city buildings in Seattle, Washington.

The team collected original data by following delivery persons from the buildings’ freight bays or nearby commercial vehicle zones (CVLZs) into each of the buildings, until delivery was completed or the return to the truck when there was a failed delivery. The Lab designed and built an application for collectors to enter the precise time that the delivery people began and ended each process step. The team then collected data for up to a week in peak delivery periods for each building. They analyzed the range and average of delay in the process steps to understand where improvement strategies will have the most significant ability to achieve project goals (13). Based on this analysis, the Lab found that the greatest opportunities to reduce the number of failed first deliveries and dwell time in truck load/unload spaces are inside buildings when delivery persons:

  • Interact with security personnel; and
  • Attempt to locate tenants.

In the next phase of the Final 50 Feet project, the Urban Freight Lab and SDOT will pilot test promising improvement strategies in and on the streets around the Seattle Municipal Tower over four weeks.

Benefits

Final 50’ project findings will be used to provide decision support to city officials and private-sector firms managing scarce resources. By applying systems engineering and evidence-based planning, we can make receiving online goods as efficient as ordering them – without clogging city streets and curb space.

We have received requests from many other cities, including Washington, D.C., to share results and lessons learned during the Freight Master Plan development process and early actions coming out of this three-year program. Seattle is committed to being a leader in urban goods policy and problem-solving and keeping our economy thriving.

According to City of Seattle officials Mr. Christopher Eaves and Ms. Jude Willcher, “Seattle is one fastest growing cities in the country. The Seattle Department of Transportation is committed meeting the urban goods delivery challenges facing most big cities in the U.S. We know that issuing parking tickets to companies who are simply trying to meet the daily delivery needs of residents and businesses isn’t the right solution. So, our goal is to identify and implement scalable strategies that improve deliveries at existing building, as well as initiate strategic research to mine new data to improve and inform new construction designs that support freight and delivery in the city. And we are incredibly grateful to have found a strong and innovative partner in the UW Freight Lab and SCTL”.

Recommended Citation:
Urban Freight Lab. “The freight of the West” Thinking Cities Magazine, December 2017, 82-85
Paper

A Policy-Sensitive Model of Parking Choice for Commercial Vehicles in Urban Areas

 
Download PDF  (1.69 MB)
Publication: Transportation Science
Publication Date: 2020
Summary:

Understanding factors that drive the parking choice of commercial vehicles at delivery stops in cities can enhance logistics operations and the management of freight parking infrastructure, mitigate illegal parking, and ultimately reduce traffic congestion. In this paper, we focus on this decision-making process at large urban freight traffic generators, such as retail malls and transit terminals, that attract a large share of urban commercial vehicle traffic. Existing literature on parking behavior modeling has focused on passenger vehicles. This paper presents a discrete choice model for commercial vehicle parking choice in urban areas. The model parameters were estimated by using detailed, real-world data on commercial vehicle parking choices collected in two commercial urban areas in Singapore. The model analyzes the effect of several variables on the parking behavior of commercial vehicle drivers, including the presence of congestion and queuing, attitudes toward illegal parking, and pricing (parking fees). The model was validated against real data and applied within a discrete-event simulation to test the economic and environmental impacts of several parking measures, including pricing strategies and parking enforcement.

Authors: Dr. Giacomo Dalla Chiara, Lynette Cheah, Carlos Lima Azevedo, Moshe E. Ben-Akiya
Recommended Citation:
Dalla Chiara, Giacomo and Cheah, Lynette and Azevedo, Carlos Lima and Ben-Akiva, Moshe E. (2020). A Policy-Sensitive Model of Parking Choice for Commercial Vehicles in Urban Areas. Transportation Science, 54(3), 606–630. https://doi.org/10.1287/trsc.2019.0970 
Paper

A Description of Fatal Bicycle Truck Accidents in the United States: 2000 to 2010

Publication: Transportation Research Board 95th Annual Meeting
Volume: 16-5911
Publication Date: 2016
Summary:

Bicycling is being encouraged across the US and the world as a low-impact, environmentally friendly mode of transportation. In the US, many states and cities, especially cities facing congestion issues, are encouraging cycling as an alternative to automobiles. However, as cities grow and consumption increases, freight traffic in cities will increase as well, leading to higher amounts of interactions between cyclists and trucks. This paper will describe where and how accidents between cyclists and trucks occur. From 2000 to 2010, 807 bicyclists were killed the United States in accidents involving trucks. In 2009, trucks accounted for 9.5% of fatal bicycle accidents, despite trucks only accounting for 4.5% of registered vehicles. The typical fatal bike-truck accident happens in an urban area on an arterial street with a speed limit of 35 or 45 mph. It is about equally likely to occur mid-block or at an intersection. Most accidents involved trucks going straight (56%), and right-turning trucks were involved in a much larger number of accidents (24%) than left turning trucks (7%). Methods such as providing bicycle lanes, or even physically separated bicycle tracks, will not be sufficient to address bicycle-truck collisions, as a significant number of accidents (49%) occur in intersections or are intersection related. Cities with a higher mode-share of bicycling had a lower rate of bicycle-truck fatality accidents.

Authors: Dr. Anne Goodchild, Jerome Drescher
Recommended Citation:
Drescher, Jerome and Anne Goodchild. (2016), "A Description of Fatal Bicycle Truck Accidents in the United States: 2000 to 2010," Accepted for presentation at the 95th Transportation Research Board Annual Meeting, Washington DC, January 10-14. [Paper # 16-5911]

West Seattle Bridge Case Study (Phase I)

Background
West Seattle is an area of the city of Seattle located on a peninsula west of the Duwamish waterway and east of the Puget Sound. In March 2020, the West Seattle High Bridge (WSHB), the main bridge connecting West Seattle to the rest of the city, was closed indefinitely to traffic due to its increasing rate of structural deterioration. Moreover, access to the Spokane Street Lower Bridge, a smaller bridge connecting West Seattle with Harbor Island and the rest of the city, was also restricted; prioritizing heavy freight, public transit, and emergency vehicles. After the bridge closure and restrictions, the total number of vehicle travel lanes crossing the Duwamish River was reduced from 21 to 12.

The unexpected closure of WSHB disrupted passenger and freight mobility to and from West Seattle, increasing travel times and generating bottlenecks on the remaining bridges, which can potentially negatively impact the livability of the peninsula as well as its economy and the environment. The situation might further deteriorate as traffic demand to and from West Seattle increases during recovery from the COVID-19 pandemic.

The Seattle Department of Transportation (SDOT) is taking actions to monitor changes in travel behavior to/from West Seattle and identify and implement strategies that could mitigate the negative impacts caused by the WSHB closure.

Goals
SDOT has engaged the Urban Freight Lab to conduct research to explore strategies to alleviate congestion impacts and minimize the disruption of goods and service delivery to West Seattle.

The purpose of this study is to support SDOT to:

  1. understand current freight movements and freight demand in West Seattle;
  2. identify a data-driven mitigation strategy for freight and service flow to and from West Seattle;
  3. assess ex-ante the effectiveness of an implemented strategy.

The freight operations considered and analyzed within the scope of the project are consumer goods and services destined for West Seattle residents and businesses. Intermediate goods and raw materials destined for construction of production and other goods transiting through West Seattle but not destined for local residents or businesses will not be studied.

Continuation
This project continues with the West Seattle Bridge Case Study Phase II.

Paper

An Agent-Based Simulation Assessment Of Freight Parking Demand Management Strategies For Large Urban Freight Generators

 
Download PDF  (3.76 MB)
Publication: Research in Transportation Business & Management
Volume: 42
Publication Date: 2022
Summary:

A growing body of research looks specifically at freight vehicle parking choices for purposes of deliveries to street retail, and choice impacts on travel time/uncertainty, congestion, and emissions. However, little attention was given to large urban freight traffic generators, e.g., shopping malls and commercial buildings with offices and retail. These pose different challenges to manage freight vehicle parking demand, due to the limited parking options. To study these, we propose an agent-based simulation approach which integrates data-driven parking-choice models and a demand/supply simulation model. A case study compares demand management strategies (DMS), influencing parking choices, and their impact in reducing freight vehicle parking externalities, such as traffic congestion. DMS include changes to parking capacity, availability, and pricing as well as services (centralized receiving) and technology-based solutions (directed parking). The case study for a commercial region in Singapore shows DMS can improve travel time, parking costs, emission levels and reducing the queuing. This study contributes with a generalizable method, and to local understanding of technology and policy potential. The latter can be of value for managers of large traffic generators and public authorities as a way to understand to select suitable DMS.

Authors: Dr. Giacomo Dalla Chiara, Andre Alho, Simon Oh, Ravi Seshadri, Wen Han Chong, Takanori Sakai, Lynette Cheah, Moshe Ben-Akiva
Recommended Citation:
Alho, A., Oh, S., Seshadri, R., Dalla Chiara, G., Chong, W. H., Sakai, T., Cheah, L., & Ben-Akiva, M. (2022). An agent-based simulation assessment of freight parking demand management strategies for large urban freight generators. Research in Transportation Business & Management, 42, 100804. https://doi.org/10.1016/j.rtbm.2022.100804 
Report

The Seattle Neighborhood Delivery Hub Pilot Project: An Evaluation of the Operational Impacts of a Neighborhood Delivery Hub Model on Last-Mile Delivery

 
Download PDF  (2.98 MB)
Publication Date: 2021
Summary:

As one of the nation’s first zero-emissions last-mile delivery pilots, the Seattle Neighborhood Delivery Hub served as a testbed for innovative sustainable urban logistics strategies on the ground in Seattle’s dense Uptown neighborhood. Providers could test and evaluate new technologies, vehicles, and delivery models — all in service of quickly getting to market new more fuel- and resource-efficient solutions, reducing emissions and congestion, and making our cities more livable and sustainable.

These technologies are also an important part of the City of Seattle’s Transportation Electrification Blueprint, including the goal of transitioning 30% of goods delivery to zero emissions by 2030.

Recommended Citation:
Urban Freight Lab (2021). The Seattle Neighborhood Delivery Hub Pilot Project: An Evaluation of the Operational Impacts of a Neighborhood Delivery Hub Model on Last-Mile Delivery.
Paper

Exploring Benefits of Cargo-Cycles Versus Trucks for Urban Parcel Delivery Under Different Demand Scenarios

 
Download PDF  (1.46 MB)
Publication: Transportation Research Record: Journal of the Transportation Research Board
Publication Date: 2020
Summary:

Urban deliveries are traditionally carried out with vans or trucks. These vehicles tend to face parking difficulties in dense urban areas, leading to traffic congestion. Smaller and nimbler vehicles by design, such as cargo-cycles, struggle to compete in distance range and carrying capacity. However, a system of cargo-cycles complemented with strategically located cargo-storing hubs can overcome some limitations of the cargo-cycles. Past research provides a limited perspective on how demand characteristics and parking conditions in urban areas are related to potential benefits of this system. To fill this gap, we propose a model to simulate the performance of different operational scenarios—a truck-only scenario and a cargo-cycle with mobile hubs scenario—under different delivery demand and parking conditions. We apply the model to a case study using data synthesized from observed freight-carrier demand in Singapore. The exploration of alternative demand scenarios informs how demand characteristics influence the viability of the solution. Furthermore, a sensitivity analysis clarifies the contributing factors to the demonstrated results. The combination of cargo-cycles and hubs can achieve progressive reductions in kilometers-traveled and hours-traveled up to around densities of 150 deliveries/km ² , beyond which savings taper off. Whereas the reduction in kilometers-traveled is influenced by the the carrying capacity of the cargo-cycle, the reduction in hours-traveled is related to to the cargo-cycle ability to effectively decrease the parking dwell time by reducing, for instance, the time spent searching for parking and the time spent walking to a delivery destination.

Authors: Dr. Giacomo Dalla Chiara, André Romano Alho, Cheng Cheng, Moshe Ben-Akiva, Lynette Cheah
Recommended Citation:
Dalla Chiara, Giacomo and Alho, André Romano and Cheng Cheng, Moshe Ben-Akiva and Cheah, Lynette. “Exploring Benefits of Cargo-Cycles versus Trucks for Urban Parcel Delivery under Different Demand Scenarios.” Transportation Research Record, (May 2020). doi:10.1177/0361198120917162.