modern railway tunnel |
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navigate by keyword : business capital centre city concrete constructed construction cross double downtown drive economy electrical emergency engineer engineered engineering equipped fast federal frequently gallery hole joint lane lights line lining link mass metro modern move movement overhead passenger quick rail railway rebuilt rescue rock sbb section segments sleeper split station structure subway support sustainable switch tbm technologies track train transportation travel tube tunnel twin underground urban wire |
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Twin track railway tunnel equipped with up to date technologies and track change. |
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