A rapid transit, underground, subway, elevated, or metro system is a railway system, usually in an urban area, with a high capacity and frequency of service, and grade separation from other traffic.

Characteristics and nomenclature

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See also Passenger rail terminology.

More on [ Rapid transit ]

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Holiday Greetings from US Armed Forces for the Birmingham Metro Area: Happy Holidays wishes from a various arm.. http://bit.ly/5a7HhX
NBC13 (NBC13HD) Mon, 21 Dec 2009 01:09:20 -0000
Holiday Greetings from US Armed Forces for the Birmingham Metro Area: Happy Holidays wishes from a various arm.. http://bit.ly/5a7HhX
Metro Birmingham forecast: It's going to be a cool day http://bit.ly/6kdpYY
bestbirmingham (Carly Nelson) Sun, 20 Dec 2009 16:13:38 -0000
Metro Birmingham forecast: It's going to be a cool day http://bit.ly/6kdpYY
Birm. Breaking News Metro Birmingham forecast: It's going to be a cool day: Metro Birmingham should see ... http://bit.ly/7xxUNu #ALnews RT
iE_Alabama (Jeremiah Simon) Sun, 20 Dec 2009 14:10:44 -0000
Birm. Breaking News Metro Birmingham forecast: It's going to be a cool day: Metro Birmingham should see ... http://bit.ly/7xxUNu #ALnews RT
Birmingham_News: Metro Birmingham forecast: It's going to be a cool day http://bit.ly/7xxUNu
t2tay75 (tracee smith) Sun, 20 Dec 2009 14:06:09 -0000
Birmingham_News: Metro Birmingham forecast: It's going to be a cool day http://bit.ly/7xxUNu
Metro Birmingham forecast: It's going to be a cool day http://bit.ly/7xxUNu
Birmingham_News (Birmingham_News) Sun, 20 Dec 2009 14:05:11 -0000
Metro Birmingham forecast: It's going to be a cool day http://bit.ly/7xxUNu
Metro Birmingham forecast: Its going to be a cool day - The Birmingham News - al.com (blog): Metro Birmingham f.. http://bit.ly/5dXheV
BirmnghamALNews (Birmingham Alabama) Sun, 20 Dec 2009 13:49:59 -0000
Metro Birmingham forecast: Its going to be a cool day - The Birmingham News - al.com (blog): Metro Birmingham f.. http://bit.ly/5dXheV

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