Vibrations causing problems, CRRI says run trains at 75 kmph

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It is not just the bearings of the elevated portion of the Airport Metro Express Line that are troubling the Delhi Metro, another study points to problems with tunnels, that have led to the buildin

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http://www.indianexpress.com/news/vibrations-causing-problems-crri-says-run-trains-at-75-kmph/975390/0
Publication Date: 
17/07/2012