RailFans never grow old

In short... as you go more pay less.
e.g.
If you are travelling a distance of 500 kms by paying Rs 100
If you travel 1000 kms you will pay less than Rs 200.
So...
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the 2nd 500 kms is costing you less than first 500 kms.
That is telescopic fare.

The telescopic fare structure, a system in which the fare decreases in slabs as the length of the journey increases and the fare does not increase proportionately with distance.
For instance, if a passenger wants to travel from Mumbai to Amritsar with a break journey at Delhi, he can purchase ticket by the PUNJAB MAIL , break journey at Delhi and purchase a ticket for the onward journey on any train that goes from Delhi to Amritsar.
Please note there are certain restrictions in this rules :-
a)...
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In the following trains you can't avail the telescopic benefit :-
1) Rajdhani's
2) Garib Rath Trains
3) Satabdi's
4) Jan Satabdi's
b) You will have to take a shortest route
ie your chosen route should not increase the shortest route plus 15 % of it
For instance if GOLDENTEMPLE MAIL IS 3597 KM from Mumbai Central to Amritsar than the route chosen by you should not increase 3597 * 115% = 4136 KM otherwise the Reservation clerk may deny you to give the Telescopic benefit over your ticket.

In order to get such reservation you will have to fill the form like this :-
Suppose you want to go to Amritsar from Mumbai Central Than
Train No 12137 Date DD/MM/YY
From :- Mumbai Central To :- New Delhi & Reservation up to Amritsar
Class...
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....... No of Pax
Onward Journey
Train No :- 12497
From :- New Delhi To :- Amritsar
Class :-