What the Subway Is Like in 16 Different Cities.
Sunday Open Thread: Urban Rapid Transit Systems of North America – Seattle Transit Blog
Mapped: historical public transit systems v their modern equivalents | Cities | The Guardian
Global urban subway development, construction material stocks, and embodied carbon emissions | Humanities and Social Sciences Communications
Why don't more U.S. cities have metro systems like New York? - YouTube
4 Unique Solutions to America's Failing Public Transportation System | Earth.Org
List of metro systems - Wikipedia
Subway Maps for Cities without Subways - Urban Omnibus
China to Tunnel 800 Miles of Subway
Clean, On Time and Rat-Free: 9 International Transit Systems With Lessons for New York - The New York Times
Chart: The Subway Systems With The Most Stations | Statista
These North American Cities Have the Best Public Transit Systems
In the United States, what cities have subways or somewhat of subways, like not full subways? - Quora
Openings and Construction Starts Planned for 2020 – The Transport Politic
Navigating Washington, DC's Metro System | Metro Map & More
UrbanRail.Net > America > USA > New York > NEW YORK CITY Subway & PATH
List of metro systems - Wikipedia
Subway Maps for Cities without Subways - Urban Omnibus
US Cities With the Highest Rates of Public Transit Ridership - WorldAtlas
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Which US cities have good and bad public transportation - Vox
List of North American rapid transit systems by ridership - Wikipedia
