#WATCH | Sandeep Mathur, Principal Executive... ... Odisha train crash live: 'Balasore Collector confirms death toll as 288'

#WATCH | Sandeep Mathur, Principal Executive Director of Signalling and Jaya Varma Sinha, Member of Operation and Business Development, Railway Board explains the functioning of interlocking. pic.twitter.com/gQ1XuZbBv3

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