Darjeeling Mail - উত্তরবঙ্গের ঐতিহ্য - Joydeep Roy

I found one thing that in most of the NFR zone based trains their coach composition is very different..

In every rake of a train coach position is totally different from Another one .................

Specially...
more...

AC coaches formation in a rake is not easy to understand

What i saw in most of NFR based trains
They didnt keep one class of AC segment together like
In Yesterday NE Exp i found
A1-H1-B1-B2-B3-A2-M5-M4-M3-M2-M1-B4-B5-PC &SLthen GS

Why it is so .......
Why NFR makes
One class of AC coaches together in Rake ?????