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Measure twice, build trains once.


KD in CA

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Sea-Tac (Seattle) Airport did the same thing.

 

In the 70's they installed a subway system to get out to the satellite terminals. Over 30 years it needed to be replaced. They ordered new larger coaches but didn't account for the existing tunnel turn radii. Needless to say, the new coaches couldn't make the turns and they had to enlarge the tunnels. Naturally, the system had to shut down during the reconstruction.

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