Railways Act, 1989
51. Provision for case in which ticket is issued for class
or train not having accommodation for additional passengers.
(1) A ticket shall be deemed to have been issued subject to the
condition of availability of accommodation in the class of carriage and the
train for which the ticket is issued.
(2) If no accommodation is available in the class of carriage
for which a ticket is issued, and the holder thereof travels in a carriage of a
lower class, he shall, no returning such ticket, be entitled to a refund of the
difference between the fare paid by him and the fare payable for the class of
carriage in which he travels.