In IRI, i found that besides English and Hindi, the local language of the originating stn of a train is used. But here, it is completely different. Engkish, Hindi and Local Language of the terminating stn, i.e, Howrah (West Bengal) has been used. So, as per the conventions of IRI, this train, starting from Rajasthan, is supposed to have either English and Hindi, or an addition of Urdu.