Champaran HumSafar Express : इन अजनबी सी राहों में, जो तू मेरा हमसफ़र हो जाये, बीत जाए पल भर में ये वक़्त, और हसीन सफ़र हो जाये. - Piyush Singh

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"The minister said the inquiry into the train accident has been completed and rail safety commissioner will submit the report at the earliest.

'The commissioner of railway safety has investigated...
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the matter and let the investigation report come. But we have identified the cause of the incident and the people responsible for it... It happened due to a change in electronic interlocking. Right now our focus is on restoration,' the minister added.

According to Indian Railways, electronic Interlocking (EI) system is a microprocessor-based interlocking equipment to read the yard and panel inputs; process them in a fail-safe manner as per the selection table and generate the required output. This system is the alternative to the conventional Relay Interlocking system (PI & RRI), the ministry says."