According to the Wikipedia page for the Washington Metro, the Washington DC Metro rail first opened it doors in 1976.
The Metro
The Metro
In Washington DC the Metro is a light rail system.
DC Motors.
Yes, in fact there are many different rail lines. Amtrak trains pass through Washington DC and Virginia. The Washington DC Metro system has many stations in both Virginia and Washington DC. CSX and other cargo trains pass through DC and Virginia.
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Yes. The Metro rail Blue line terminus is stationed at Franconia-Springfield (the closest station to Fairfax, VA) and will go to Washington DC and can connect you to any other line in the system (except red that you'll have to switch in a few places to get to the right station).
The address of the Verizon Center is 601 F St NW, Washington DC 20004. The closest Metro rail station is Gallery Place/Chinatown, which is served by the Green, Yellow, and Red lines.
The subway system is call the Metro.
Yes. Baltimore and New Carrolton, MD are served by Amtrak's Northeast Corridor Line to Washington, DC. You can change in Washington DC for Amtrak's Capitol Limited, which serves Cumberland. MD, or ride the MARC commuter rail system, or Metro to the Maryland Suburbs.
No. Washington DC is a single metro area. It did subsume the older city of Georgetown MD, when DC was created by Congress.
www.wmata.com has a map of DC with all of the metro stations. Those are named after the neighborhoods that they are in.