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• Herrmann, Michele. “This European Country Has Made Its Public Transportation Free”. Forbes, 14 Mar. 2020, https://www.forbes.com/sites/micheleherrmann/2020/03/14/luxembourgh-public-transportation-free/?sh=58e8f9f31382.
• Hess, Abigail J. “Americans Spend over 15% of Their Budgets on Transportation Costs - These US Cities Are Trying to Make It Free”. CNBC, 2 Mar. 2020, https://www.cnbc.com/2020/03/02/free-public-transportation-is-a-reality-in-100-citiesheres-why.html.
• Jaffe, Eric. “How Parking Conquered L.A. in 14 Facts, Maps, and Figures”. Bloomberg, 3 Dec. 2015, https://www.bloomberg.com/news/articles/2015-12-03/how-parking-conquered-los-angeles-in-14-facts-maps-and-figures.
• Laughlin, Jason. “Philly’s Still Stick in Traffic.  Here Are 5 Fixes from around the World.”. Philadelphia Inquirer, 29 Jan. 2019, https://www.inquirer.com/transportation/inq/traffic-philadelphia-center-city-bike-lanes-subway-bus-transit-solutions-20190129.html.
• “See Just How Much of a City’s Land Is Used for Parking Spaces”. Fast Company, 20 July 2017, https://www.fastcompany.com/40441392/see-just-how-much-of-a-citys-land-is-used-for-parking-spaces.
• Williams, Len. “What Happens When a City Bans Cars from Its Streets”. BBC, 16 Oct. 2019, https://www.bbc.com/future/article/20191011-what-happens-when-a-city-bans-car-from-its-streets.