Becker, Udo J., Thilo Becker and Julia Gerlach. 2012. “The True Costs of Automobility: External Costs of Cars.” Institute of Transport Planning and Road Traffic, Technical University of Dresden. https://www.greens-efa.eu//legacy/fileadmin/dam/Documents/Studies/Costs_of_cars/The_true_costs_of_cars_EN.pdf
Börjesson, Maria, and Jonas Eliasson. 2012. “The Value of Time and External Benefits in Bicycle Appraisal.” Transportation Research Part A: Policy and Practice 46, no. 4 (May): 673–83. https://doi.org/10.1016/j.tra.2012.01.006
Federal Office for Spatial Development. 2018. “Costs and Benefits of Transport.” Federal Office for Spatial Development, Bern, Switzerland. https://www.are.admin.ch/are/en/home/transport-and-infrastructure/data/costs-and-benefits-of-transport.html
Fishman, Elliot. 2013. “Bikeshare: A Review of Recent Literature.” Transport Reviews 36, no. 1: 92–113. https://www.doi.org/10.1080/01441647.2015.1033036
Forrester, John. 2012. Effective Cycling. 7th ed. Cambridge, MA: MIT Press. https://mitpress.mit.edu/books/effective-cycling-seventh-edition (see also http://johnforester.com)
Harter, Jim. 1984. Transportation: A Pictorial Archive from Nineteenth-Century Sources; 525 Copyright-Free Illustrations Selected by Jim Harter. New York: Dover. https://www.worldcat.org/title/transportation-a-pictorial-archive-from-nineteenth-century-sources-525-copyright-free-illustrations-for-artists-and-designers
International Bicycle Fund. 2018. “Bicycle Statistics: Usage, Production, Sales, Import, Export.” International Bicycle Fund, Seattle, WA. http://www.ibike.org/library/statistics-data.htm
International Transport Forum. 2013. Cycling, Health and Safety. ITF Research Reports. Paris: OECD Publishing. https://doi.org/10.1787/9789282105955-en
Jensen, Søren Underlien. 2007. “Bicycle Tracks and Lanes: A Before-After Study.” Trafitec ApS, Lyngby, Denmark. https://www.researchgate.net/publication/237524182_Bicycle_Tracks_and_Lanes_a_Before-After_Study
Hollingsworth, Joseph, Brenna Copeland and Jeremiah X Johnson. 2019. “Are e-scooters polluters? The environmental impacts of shared dockless electric scooters.” Environmental Research Letters August 2. IOP Science. https://doi.org/10.1088/1748-9326/ab2da8
Kor, Jim. 1994. “Solos Personal Transit.” In Proceedings of the Second European Seminar on Velomobiles/HPV: 85-101, Laupen Castle, Switzerland, August 25, 1994. Future Bike. http://velomobileseminar.online
Lemp, Jason, and Kara Kockelmann. 2008. “Quantifying the External Costs of Vehicle Use: Evidence from America’s Top Selling Light-Duty Models.” Transportation Research 13D, no. 8: 491–504. https://www.researchgate.net/publication/222398495
Litman, Todd A. 2009. “Transportation Cost and Benefit Analysis.” Victoria Transport Policy Institute, British Columbia. http://vtpi.org/tca/tca01.pdf
Royal College of Physicians. 2016. Every Breath We Take: The Lifelong Impact of Air Pollution. London: Royal College of Physicians. http://bit.ly/1Nv4CIa
Schmidt, Theodor. 1994. “What Is HPV Safety?” In Safety and Design: Second European Seminar on Velomobiles/HPV, Laupen Castle, Switzerland, August 25, 1994: 21-7. Future Bike. http://velomobileseminar.online
Stockinger, Herbert H. 1992. “The Bicycle Railroad.” In American Heritage of Invention & Technology vol. 8, issue 2. New York: Forbes. http://www.inventionandtech.com/content/bicycle-railroad-1
Transport for London. 2016. London Cycling Design Standards. London: Transport for London. https://tfl.gov.uk/corporate/publications-and-reports/streets-toolkit#on-this-page-2
Transport for London. 2017. “Strategic Cycling Analysis: Identifying Future Cycling Demand in London.” Transport for London, London. http://content.tfl.gov.uk/strategic-cycling-analysis.pdf
Transport for London. 2018. “Congestion Charge Factsheet.” Transport for London, London. .
Varian, Hal R. 2006. “Beyond Insurance: Weighing the Benefits of Driving vs. the Total Costs of Driving.” New York Times, November 16. https://www.nytimes.com/2006/11/16/business/16scene.html
Wikipedia. 2019a. https://en.wikipedia.org/wiki/Bicycle-sharing_system
Wikipedia. 2019b. https://en.wikipedia.org/wiki/Cycling_in_Copenhagen
copenhagenize.com, copenhagenizeindex.eu, portlandize.com
network.thehighline.org/projects/
the606.org (Bloomingdale trail, Chicago)
skyridetechnology.com (Waconia, Minnesota)
Internet search for “Skycycle pedal powered roller coaster” (SkyCycle in Japan)
introvation.nl/projects/shweeb (Shweeb system for transportation study)
CycleLogistics.eu, eclf.bike (European Cycle Logistics Federation), rippl.bike (Register of Initiatives of Pedal Powered Logistics)
sandsmachine.com (bicycle torque couplings)
streetfilms.org/velib’/ (Vélib’, Paris)
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