Somebody told me that on Indian Railways, 60% of seats are reserved for counter bookings and 40% for online bookings. Is this correct or not? Because while I am checking seat availabilty on the Internet, no seats are available, but when I went to ask at a ticket counter, berths are available.
Indian Railways has approximately 1 bazillion different quotas (Tatkal, Foreign Tourist, Handicapped, Ladies, ...), but as far as I'm aware, online bookings are not one of them: both ticket counter and online bookings use the same quotas. If you're getting different answers online and in person, you're presumably looking at different quotas/tickets/trains/classes?
For more about the algorithm, this Quora answer goes into far more detail than I can attempt to summarize.
Indian railways is having many quotas. There are 18 in total as listed here
- GN General Quota
- LD Ladies Quota
- HO Head quarters/high official Quota
- DF Defence Quota
- PH Parliament house Quota
- FT Foreign Tourist Quota
- DP Duty Pass Quota
- CK Tatkal Quota
- SS Female(above 45 Year)/Senior Citizen/Travelling alone
- HP Physically Handicapped Quota
- RE Railway Employee Staff on Duty for the train
- GNRS General Quota Road Side
- OS Out Station
- PQ Pooled Quota
- RC(RAC) Reservation Against Cancellation
- RS Road Side
- YU Yuva
- LB Lower Berth
Out of these only 4 quotas can be booked online (premium tatkal is not a seperate quota. So it is not listed here). They are
Physically Handicapped Quota
So if you are booking on a different quota, for example Foreign Tourist Quota then you can buy the tickets in counter while your online booking may say
no tickets are available.
There is no seperate quotas for online booking and counter booking. It is just that you cannot book some quotas online.