Light rail in the United States - Wikipedia
The Busiest Rapid Transit Systems In The United States - WorldAtlas
The 10 U.S. metro rail systems that lose the most money per passenger
Largest 50 Metros
15 Most Expensive US Cities & Metros | Tax Foundation
The Busiest Rapid Transit Systems In The United States - WorldAtlas
Understanding America's Enormous $20.6T Economy by Comparing US Metro Area GDPs to Entire Countries | American Enterprise Institute - AEI
Most U.S. unauthorized immigrants live in just 20 metro areas | Pew Research Center
Best US Cities for Public Transportation, Ranked: WalletHub Study
Is Washington's Metro Improving? After $150 Million, Maybe - The New York Times
Making Custom Metro Maps -- GIS Resources
List of metro systems - Wikipedia
Why Public Transit Ridership Is Down In Most U.S. Cities | Here & Now
Zelle - US Metro Bank
When Will the U.S. Build Another Subway?
US Metro Bank - Putting People Ahead
U.S. Congress to scrutinize Washington subway system after derailment | Reuters
Map of America's 50 Largest Metropolitan Areas by Populations - Vivid Maps
Chinese train manufacturer wins US metro deal - Business - Chinadaily.com.cn
Is Washington's Metro Improving? After $150 Million, Maybe - The New York Times
In Which U.S. Metro Areas You Are Most Likely to See Rodents and Roaches in Homes
Washington Metro, 40 and Creaking, Stares at a Midlife Crisis - The New York Times
50 Largest Metropolitan Areas in the United States (v2) : r/MapPorn
U.S. Congress to scrutinize Washington subway system after derailment | Reuters
List of metro systems - Wikipedia
/cdn.vox-cdn.com/uploads/chorus_image/image/65285517/shutterstock_522009004.0.jpg "Most beautiful subway stations in the U.S. - Curbed")