@Vinay Kumar: Re# 97391-14
Starting Station: A
Intermediate Station: B
Destination Station: C
Terminating Station: D
From...
more... A-B, A-C, A-D (GNWL).
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RLGN
If ticket is purchased from B or C (for journey from B-C-D or C-D , and if B or C are imp places then the ticket wud be in RLGN, and subsequently would go to WL.
(Note: In some cases, where the station shares less quota, it can be clubbed with GN Quota after GN Quota exhausts and/or to exhaust the RL Quota).
(Considering the above point, Journey here can be from A to any station).
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PQ
If a train passes thry B-C(starts at A , ends at D) and if the demand of the train is high B-C can share a PQ for this train. B
Journey can be:
B-C-D or C-D
This is to prevent complete booking of this train from A.
(Note: In some cases, where the station shares less quota, it can be clubbed with GN Quota after Gh N Quota exhausts and/or to exhaust the PQ Quota).
(Considering the above point, Journey here can be from A to any station).
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RLWL
When the intermediate stations do not have any RL/PQ Quota, it is assigned to Road Side Waiting List.
RL quota caters to passengers travelling from B-C-D. RL quota tickets are never available from A. When RL quota exhausts, RAC begins, and followed by RLWL. In some cases when RL Quota is small, the RLWL is active immediately. There can be more than one RLWL for some long distance trains (Rajdhani).