The Indian Railways (IR) carries about 5.5 lakh passengers in reserved
accommodation every day. The computerised Passenger Reservation System
(PRS) facilitates booking and cancelling of tickets from any of the 4000
terminals (i.e PRS booking windows) all over the country. These tickets can
be booked or cancelled for journeys commencing in any part of India and
ending in any other part, with travel times as long as 72 hours and distances
up to several thousand kilometers.