Some most frequently used terms in Live train status are:
1. ETA and ETD: Expected/Estimated time of Arrival and Expected/Estimated Time of Departure.
2. ATA and ATD: These terms mean Actual Time of Arrival and Actual Time of Departure.
3. RT: Right Time, without any delay
4. PF: Expected Platform
5. UA: Update Awaited
CNC: Cancelled at this station