Publications

Summary:
We have seen major changes in the last few years as cities and companies in the United States transition to more environmentally sustainable urban delivery. But progress still remains piecemeal and slow. In both policy and practice on city streets, Europe and parts of Asia are far ahead of the U.S. in advancing electrification, shifting away from traditional trucks to smaller forms like e-bikes, and managing city space to induce or support zero emission delivery (ZED).

Summary:
As warehousing and distribution centers (W&D) rapidly expand, nearby communities, especially those that have been historically marginalized, face growing health risks from increased freight traffic. This research examines how local and state zoning decisions across the U.S. influence the placement and regulation of W&D facilities, and whether those actions consider environmental justice (EJ) principles.

Summary:
Boston Delivers was an 18-month pilot project (running September 2023 through February 2025) led by the Boston Transportation Department in partnership with Net Zero Logistics and funded by MassCEC through the ACT4All program. The project tested the use of electric cargo bikes for neighborhood deliveries, aiming to reduce congestion, improve air quality, and support local businesses by replacing car and van trips with more sustainable, right-sized vehicles.

Summary:
Most of a delivery driver’s time is spent outside the vehicle, walking the last 50 feet to reach the delivery customers while the vehicle is stationary. However, little is known about the walking component of delivery routes, while most models and algorithms used for scheduling and planning urban freight vehicles focus solely on the driving component. This study fills this research gap by providing an empirical analysis of the role of walking in last-mile deliveries.

Summary:
While e-commerce continues to grow as a proportion of retail sales, consumers still largely rely on vehicle travel to shop. At the same time, the “15-minute city” concept is gaining traction, suggesting that the livability and sustainability of urban areas will improve if essential goods and services are all located in close proximity to residential areas.

Summary:
As e-commerce and urban deliveries spike, there is an increasing demand for curbside loading/unloading space. However, commercial vehicle drivers face numerous challenges while navigating dense urban road networks.

Summary:
This study explores what influences people’s willingness to use Autonomous Delivery Vehicles (ADVs), incorporating factors like social influence, environmental concern, enjoyment, and perceived security risks to better understand public perception.

Summary:
In 2023, Portland was awarded a U.S. Department of Transportation SMART grant to pilot a Zero-Emission Delivery Zone (ZEDZ). Funding for this Stage One SMART grant will allow PBOT to trial changing three to five truck loading zones into “Zero-Emission Delivery” loading zones in downtown Portland.

Summary:
Imagine the frustration of searching for a misplaced item, like your house keys or wallet, before leaving for a night out. Now, picture a FedEx or Amazon delivery driver halfway through a tight morning route, struggling to locate a parcel due by 9 a.m. while parked right outside the customer’s address. These misloads — where shipments are accidentally loaded onto the wrong delivery route or vehicle — not only cause stress and lost time for the delivery driver but also...

Summary:
The rapid growth in e-commerce activities and the constant specialization of industries have aroused an unparalleled demand for trucking in urban areas, leading to growing concern over its interference to the transportation system.

Summary:
This study introduces a first-of-a-kind modeling framework to evaluate the equity impacts of last-mile ecommerce delivery in U.S. cities. Analyzing data across 41 metropolitan areas, the research finds that populations of color experience significantly higher exposure to delivery traffic—about 35% more than white populations—despite ordering fewer packages. The framework helps planners assess baseline equity performance and test urban freight strategies.

Summary:
Commercial electric vehicles (EVs) have increasingly gained interest from urban freight companies in the past decade due to the introduction of economic and policy drivers. Although these factors promote urban freight electrification, some barriers hinder the transition to fully electric fleets, such as the significant monetary investment required to replace the current internal combustion engine vehicles (ICEV) and the lack of readily available electric freight vehicles.

Summary:
Problem, research strategy, and findings The transportation sector is the largest contributor of greenhouse gas emissions in the United States. To articulate how cities may combat rising emissions, municipalities throughout the country have produced climate action and sustainability plans that outline strategies to reduce their carbon footprints from transportation.

Summary:
Urban freight denotes vehicle and commodity flows in an urban environment. These flows depend on a complex set of relationships among various stakeholders. In the last decades, urban freight has experienced an incredible pace of evolution, which has occurred due to various technological factors. One example is the ubiquity of internet access and the advance in information technology, leading to e-commerce adoption.

Summary:
Following an earthquake, coastal and island communities may need to rely primarily on maritime transport for regular and critical supplies during the emergency response phase. However, such a disaster may also disrupt the needed transport activities in several ways, including damage to critical infrastructure (CI) such as ports and roads.