Updated parcel deliveries figures by major carriers, including Amazon. 2020 is yet another year that experienced strong growth in parcel deliveries and an ongoing decline in mail deliveries. Mail Carried by USPS and Parcels Carried by Major Carriers, United States, 2004-2020 | The Geography of Transport Systems (transportgeography.org)
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Air transport section updated
The section covering air transportation, with Dr. John Bowen as lead author, has been substantially updated. It reflects recent development in air transport services and the ongoing impacts of the Covid pandemic. 5.5 – Air Transport | The Geography of Transport Systems (transportgeography.org)
Continue readingPBS Interview for “Fighting off Famine”
I appeared on PBS Iowa on a cover story on the state of global food systems. The video segment is available here: https://www.iowapbs.org/mtom/story/38686/fighting-famine Provided some input about the role of logistics as better distribution capabilities have played an important role in alleviating the extent and impacts of famines around the
Continue readingDaily Air Travelers in the United States, 2019-2022
Source: Transportation Security Administration (TSA). The number of travelers processed through airport security checkpoints in the US fell sharply in the early weeks of the COVID-19 pandemic (March/April 2020). Numbers remained at around 35% of 2019 levels throughout the remaining of 2020. By mid-2021, as vaccination became widespread, the demand
Frankfurt International Airport, April 15, 2020
Source: Used with permission. Gerald Friedrich/Pixabay (2020). A nearly empty terminal at Frankfurt Airport at 2 PM on Wednesday, April 15, 2020. Frankfurt is one of Europe’s busiest air transport hubs and, during a normal weekday, handles more than 200,000 passengers. In March 2020, several governments started to impose lockdowns
Container shipping costs and cargo value (update)
Updated a page depicting the complex relationships between the commercial value of containerized cargo and the associated transport cost range per TEU. There are significant differences in relative transport costs according to cargo type. Container Shipping Costs and Cargo Value | The Geography of Transport Systems (transportgeography.org)
Continue readingRange of activities performed by ports
Updated an existing page providing an overview of the wide range of activities directly related to a port. Range of Activities Performed by Ports | The Geography of Transport Systems (transportgeography.org)
Continue readingTransport Modes and Globalization
The “International Encyclopedia of Transportation” is now available via academic publisher Elsevier. This massive academic work edited by Roger Vickerman consists of seven volumes with contributions by hundreds of scholars with various specializations in transport studies. I authored an entry on the topic of transport modes and globalization. Transportation modes
Continue readingTypes of transportation demand (new page)
Added a new page resuming the main conceptual representations of transportation demand. They include constant demand, which a proportion of a variable, deterministic demand, which is a function of several parameters, and stochastic demand, which is a bounded probability. Types of Transportation Demand | The Geography of Transport Systems (transportgeography.org)
Continue readingTypes of Transportation Demand
Estimating transportation demand can be conceptualized from three main perspectives that are also models: