what is rc in train ticket

The abbreviation RC on a train ticket stands for "Reservation Against Cancellation". This means that you have a reserved seat, but there is a possibility that it could get canceled. In case of cancellation, you will receive a berth on the train on a shared basis with another passenger. An RAC ticket holder is given an empty berth if there are any last-minute cancellations, if any quota remains unsold, or if any confirmed ticket holders are given a free upgrade according to seat availability in upper class. Generally, RAC/WL tickets will have two numbers - the first number shows the status of the ticket at the time of booking, and the second number after the slash (/) shows the current status of the ticket. So, having an RAC ticket means that it is possible to travel without confirmed berth allocation.