(a) whether suggestions have been made to the Railway Board by the rail fare review committee to give rebate in the fare on the basis of vacant seats in a train;
(b) if so, the details thereof;
(c) whether the Government is contemplating/like to consider to introduce fare system of airlines in Railways in case tickets are booked by the passengers months before; and
(d) if so, the details of the provision for rebate being made/likely to be made in percentile terms?