One thing I wanted to say ..
[Note :- Please don't take my words on region based]
Several times I have noticed that trains belonging to S.E or E.R zones .... ( OBHS & pantry staff ) they ask for tip ... ( 10 /20 ) rupees per berth .....
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more...
This thing is specially I seen in these trains having OBHS staff ....... based on ER zones ........