Best US Cities for Public Transportation, Ranked: WalletHub Study
Here's How Tiny Toronto's Subway System Is Compared To Other Subways Around The World - Narcity
US Cities With the Highest Rates of Public Transit Ridership - WorldAtlas
The Best Cities for Public Transportation - SmartAsset
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Which US cities have good and bad public transportation - Vox
Clean, On Time and Rat-Free: 9 International Transit Systems With Lessons for New York - The New York Times
In the United States, what cities have subways or somewhat of subways, like not full subways? - Quora
These North American Cities Have the Best Public Transit Systems
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NYC subway tops U.S. cities for most sustainable transit system - Curbed NY
When American transit agencies ignore the world's move to open gangways – The Transport Politic
How Your City's Public Transit Stacks Up | FiveThirtyEight
Lessons from Washington Metro, America's Last Great Subway System
Openings and Construction Starts Planned for 2020 – The Transport Politic
4 Unique Solutions to America's Failing Public Transportation System | Earth.Org
The Case for the Subway - The New York Times
Navigating Washington, DC's Metro System | Metro Map & More
List of metro systems - Wikipedia
The World's Best Subways
Chart: The Subway Systems With The Most Stations | Statista
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Which US cities have good and bad public transportation - Vox
Subway Maps for Cities without Subways - Urban Omnibus
China to Tunnel 800 Miles of Subway
xkcd: Subways
