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May 9, 2019

* The views expressed in this article are personal opinions and do not represent the views of the institutions I have studied or work for

I grow up in Cali, Colombia. Mobility for a middle-class teenager in a developing-world city means a family of five shared one car s...

January 31, 2019

Transportation network companies (TNCs) such as Uber and Lyft are disrupting transportation at a large scale – both, in how passengers use this service, and how it provides labor opportunities to millions of drivers. Despite TNCs’ promises to end car ownership (Dudley,...

September 26, 2018

The image below illustrates the quantity of people who can travel per hour per lane (PPHPL) via various modes of transportation. The figure presents a scenario in which a stadium is filled with people who traveled there using different modes. The blue lane is for buses...

December 31, 2015

When you hear the words:" "died", "crash", killed", "accident", if I'm guessing right the word "car" automatically comes to mind. In the U.S., around 40,000 people died per year in car crashes. Let me state that again: 40,000 fatalities. That's about 200 planes (200-pa...

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2018 by Alejandro Henao