A lot of the engineering decisions that get made in railroading have to do with energy. How does the rolling resistance of a 20-ton freight railcar compare to my little grocery hauler? 1977 Resistance Report: https://railroads.dot.gov/sites/fra.dot.gov/files/fra_net/15925/1977_RESISTANCE%20OF%20A%20FREIGHT%20TRAIN%20TO%20FORWARD%20MOTION.PDF Watch this video ad-free on Nebula: https://nebula.tv/videos/practical-engineering-which-is-easier-to-pull-railcars-vs-road-cars Signed copies of my book (plus other cool stuff) are available here: null Practical Engineering is a YouTube channel about infrastructure and the human-made world around us. It is hosted, written, and produced by Grady Hillhouse. We have new videos posted regularly, so please subscribe for updates. If you enjoyed the video, hit that ‘like’ button, give us a comment, or watch another of our videos! CONNECT WITH ME ____________________________________ Website: http://practical.engineering/ Twitter: https://twitter.com/HillhouseGrady Instagram: https://www.instagram.com/practicalengineering Reddit: https://www.reddit.com/r/PracticalEngineering Facebook: https://www.facebook.com/PracticalEngineerGrady​ Patreon: http://patreon.com/PracticalEngineering SPONSORSHIP INQUIRIES ____________________________________ Please email my agent at practicalengineering@standard.tv DISCLAIMER ____________________________________ This is not engineering advice. Everything here is for informational and entertainment purposes only. Contact an engineer licensed to practice in your area if you need professional advice or services. All non-licensed clips used for fair use commentary, criticism, and educational purposes. SPECIAL THANKS ____________________________________ This video is sponsored by Henson. Stock video and imagery provided by Getty Images, Shutterstock, and Videoblocks. Music by Epidemic Sound: http://epidemicsound.com/creator Tonic and Energy by Elexive is licensed under a Creative Commons Attribution License Source: https://www.youtube.com/watch?v=U6fBPdu8w9U Video by Grady Hillhouse Edited by Wesley Crump Written and Produced by Ralph Crewe Production Assistance from Josh Lorenz Graphics by Nebula Studios