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Old Jan 22, 2006 | 2:58 pm
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WHBM
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Originally Posted by SST
Sure it is! Have you ridden it? It is underground, in a tunnel that's perhaps 5 miles long, has a system of 5 lines which branch off at either end
Such a system is known to transit professionals as a "Pre-Metro", as opposed to a true metro/subway. The pioneers of the approach were in Germany, particularly Frankfurt and Cologne.
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