The goods train that rammed into the Kanchanjunga Express between Ranipatra Railway Station and Chattar Hat Junction in West Bengal on Monday was allowed to cross all red signals as the automatic signalling had "failed", internal documents show. The document, a written authority called TA 912, was issued to the driver of the goods train by the station master of Ranipatra, authorising him to cross all red signals, a railway source said.
