Source: Adapted from Our World Data. Before the 20th century, most famines and related food shortages occurred because of supply failures related to droughts and flooding. The lack of transportation and distribution capabilities prevented compensating for local shortages by bringing agricultural surpluses from other regions. The case of China is
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Complex systems and transportation (new page)
Added a new page that discusses the main characteristics of complex systems and representative elements of transportation. Complex Systems and Transportation
Continue readingVulnerability of transportation networks (new page)
Added a new page discussing that the vulnerability of transportation systems is dependent on the type and structure of specific transportation networks. Types of Transportation Networks and Vulnerabilities
Continue readingTypes of Transportation Networks and Vulnerabilities
Depending on the mode they represent, transportation networks have different configurations:
Pedestrian Fatalities, United States (new page)
Pedestrian deaths are on the rise after decades of decline. This disturbing trend is the outcome of several factors, including the rise in SUV sales, more people living in suburbia and the diffusion of smartphones (distractions for both the drivers and the pedestrians). These factors cannot be easily addressed so
Continue readingPedestrian Fatalities, United States, 1990-2020
Source: Governors Highway Safety Association. Like in many developed economies, the number of pedestrian fatalities has been steadily decreasing in the United States, particularly because of better vehicle design and road safety (e.g. more pedestrian crossings and speed limits in high-risk areas). However, since the late 2000s, the trend has
Commuting profile, United States (update)
The commuting profile continues to deteriorate, particularly with the decrease of the average commuting speed. Home-to-Work Commute Profile, United States, 1977-2017
Continue readingWorld air transport traffic volumes (update)
Air mobility for both passengers and freight shows an ongoing growth, often at a faster rate than other transportation modes. This industry, at the aggregate level, remains a high growth sector with peak air travel demand uncertain at this point. World Air Travel and World Air Freight Carried, 1950-2018
Continue readingAir transport fatalities (update)
Updated an existing page about air transport fatalities. There is an enduring downward trend in facilities that is even more impressive if juxtaposed with the substantial growth in passenger-km carried by air transport. Number of Yearly Fatalities due to Air Transport Crashes, 1918-2018
Continue readingMost Suitable Cereal (new page)
Map showing the most suitable cereal for cultivation based upon the existing biophysical conditions as well as the average market value. Part of the global food logistics material being developed. Most Suitable Cereal
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