There are 7.54 lakh safety-related posts in railways across 17 zones out of which 1.25 lakh are unoccupied, the Ministry of Railways said in a statement the Upper House.
It told the House that 455 rail mishaps have taken place since 2013, 95 of which occurred in 2016-2017.
Following inquiries into these accidents, the railways "removed/dismissed 118 officials" and 500 personnel were penalised in the past four years.
About 190 people were killed in three rail mishaps between November last year and January.
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