Editing Traffic congestion (section)

==References==
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2019 Top 100 Truck Bottlenecks. (February 14, 2019). Retrieved November 3, 2019, from https://truckingresearch.org/2019/02/06/atri-2019-truck-bottlenecks/.
Haag, M., & Hu, W. (October 27, 2019). 1.5 Million Packages a Day: The Internet Brings Chaos to N.Y. Streets. Retrieved November 1, 2019, from https://www.nytimes.com/2019/10/27/nyregion/nyc-amazon-delivery.html?searchResultPosition=1.
Popovich, N., & Lu, D. (October 10, 2019). The Most Detailed Map of Auto Emissions in America. Retrieved November 1, 2019, from https://www.nytimes.com/interactive/2019/10/10/climate/driving-emissions-map.html?module=inline.
Reed, S. (September 21, 2018). In London, Electric Trucks Are Helping UPS Make 'Eco-Friendly' Deliveries. Retrieved November 3, 2019, from https://www.nytimes.com/2018/09/21/business/energy-environment/electric-ups-trucks-in-london.html?module=inline.
Rooney, K. (April 3, 2019). Online shopping overtakes a major part of retail for the first time ever. Retrieved November 2, 2019, from https://www.cnbc.com/2019/04/02/online-shopping-officially-overtakes-brick-and-mortar-retail-for-the-first-time-ever.html.