The majority of services associated with Indian Railways are managed by IRCTC (Indian Railway Catering and Tourism Corporation). It also offers the ability to book train tickets online.
Below mentioned is a video in Hindi explaining RAC
According to their official website, advance bookings for train tickets will be opened 120 days before the journey and passengers will be given a particular ticket status, which may be one of the following:
- Waiting List (WL)
- Reservation Against Cancellation (RAC)
The trains have certain specific seats intended for passengers listed in the RAC. RAC status tickets offer passengers a seat in the train, but not a sleeping berth. So it means you can enter the train to occupy your seat on a train if you are a passenger with a RAC status.
If RAC status is filled out then you are on the waitlist.
So, the RAC basically means you’ll have a seat on the train, but in most cases, someone else will be sitting in it with you. If a person who has confirmed a ticket cancels it, your RAC ticket may be converted into a confirmed ticket.
The waiting list or the WL ticket means that the passenger is on the waiting list and does not get a seat on the train.
A passenger on the Waiting List is not permitted to travel on a reserved train. They can, however, travel in those unreserved coaches that are attached together.
For passengers who have their ticket status as WL followed by a number, this means that the passenger is on the waiting list and his/her ticket can be checked if passengers who have already booked their tickets for the same journey cancel their tickets.