Why Indian Railways may scrap RAC; two passengers share one berth but pay full fare
RAC is a train ticket under which two passengers share a single berth even though each is charged the full fare and receives only half the sleeping space. RAC originated at a time when railway reservations were largely processed manually and there was no electronic mechanism to track cancellations and vacant berths in real time.
We haven't written up this one. Times of India has the full story — the link below goes straight to it.