Ticket Cancellation Rules: Railways has issued a new rule that if a train ticket is cancelled within 8 hours of the train departure, up to 50% of the ticket will be deducted, and only the remaining 50% will be refunded. If less than 8 hours remain or the train is missed, no refund will be given. The TDR process may vary. Learn about all the new rules, which will come into effect from April 1.