The Metro is dead. Long live the Super Metro

The world’s largest cities are being swept up in a new rail revolution. Population growth and new land use patterns mean that traditional separate underground metros and commuter rail networks no longer provide an adequate solution. It means linking up all the rail elements in new ways explain

The majority of the world’s population now live in urban areas. That point was reached in 2008, according to official UN statistics, as the continuing migration from the countryside and population growth within metropolitan areas have combined to  change the way the majority of the world’s citizens live. 3.3 billion of us now live in urban areas.

In 1950 there was just one city of over 10m people – New York. Now there are 27, and experts believe that by the end of 2015,...

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