Rac Description:
RAC Means- Reservation Against Cancellation
Full-Form Of RAC- Reservation Against Cancellation
Full-Form of RAC in Railway- Reservation Against Cancellation
RAC means Reservation Against Cancellation In Indian Railway. This means that your ticket will be confirmed when a passenger with a confirmed ticket cancels his ticket.
Under RAC, two passages are allotted one birth. The side lower seat is given to two passengers to sit and travel.
You can board a train with an RAC ticket. But there is only one problem, that you have to share your birth with another passenger.
After the train departure, TTE can give a confirmed berth to you or the passenger traveling on the berth with you, if any berth will remain empty.
If you take a reserved ticket in Indian Railways, you can get the following 3 types of tickets-
With confirmed and RAC tickets, you are allowed to travel on the train.

yes, RAC ticket is a confirm Ticket, But in Partial Manner. the Berth number and Bogie number is Given so legally you can board the train and travel.
In any train that has RAC quota, the RAC Tickets are given only after the general quota seats are over, and before the waiting list ticket starts.
Almost all mail and express trains have RAC quota. Barring Jan Shatabdi Express, Shatabdi Express, and Double Decker trains, almost all the trains have RAC quota.

The biggest benefit of a RAC ticket is that with this ticket you get the right to board the train.
Because as you know you cannot travel on a train with waiting list tickets
And if you are traveling on a train with a RAC ticket, there is a good chance that you will also get a confirmed berth soon, which depends on TTE finding an empty seat anywhere.
If your travel plan is not a hundred percent confirmed, in this condition, if you have a RAC ticket, then you are more beneficial. Because if you want to travel then you can also travel and if you have to cancel the ticket, then the ticket cancellation charge is very less in case