Delivery by drone: An evaluation of unmanned aerial vehicle technology in reducing CO2 emissions in the delivery service industry

Goodchild, A., & Toy, J. · 2018

full-text

This is a widely cited comparison that splits drone CO2 by how many recipients are served and how close they are to the depot, not by distance alone. It matters because it does not claim that the aircraft is always lower-carbon. The card organizes the abstract-level claim and does not report a new full-text reading.

Under stated logistical assumptions, it compares CO2 and vehicle distance for truck delivery and drone delivery. Drones look better when the service zone is near the depot or the number of stops is small; trucks look better when recipients are both far and numerous. The authors also say a blend of the two modes can be lower still.

Results depend strongly on the drone’s energy requirement and on how many stops one aircraft serves. The paper is not a full life-cycle account of manufacturing the vehicle. This card does not recompute a particular gram figure.