Do you mean Metro, as in light rail transportation? If so, the railway tracks form the second conductor and the return path for the current flow.
Yes, a single circular line called the Glasgow Subway.
Multiplexing allows several users to share a single connection. For example, several computers at my home share a single ADSL line, to connect to Internet.Multiplexing allows several users to share a single connection. For example, several computers at my home share a single ADSL line, to connect to Internet.Multiplexing allows several users to share a single connection. For example, several computers at my home share a single ADSL line, to connect to Internet.Multiplexing allows several users to share a single connection. For example, several computers at my home share a single ADSL line, to connect to Internet.
Lyon Metro Line A was created in 1978.
A connection between two telephone central switching offices. The basic trunk line is called a T1 line. They provide many connections in a single cable, originally they were bundles of copper wire twisted pairs but now are often just a single fiber optic line.
Luzhou Line - Taipei Metro - was created in 2010.
Red Line - Delhi Metro - was created in 2002.
Xiaonanmen Line - Taipei Metro - was created in 2000.
Tokyo Metro Namboku Line was created in 1991.
Tokyo Metro Yūrakuchō Line was created in 1974.
Blue Line - Washington Metro - was created in 1977.
Red Line - Dubai Metro - was created in 2009.
Line B - Rome Metro - was created in 1955.