Sri Jagannath Express is as good as Abada Prasad - Brandon Buffard

I've always wondered about new coaches in transit. Since most of them come from RCF/ICF/MCF, how come we usually never see an entire rake in transit from Chennai/Kapurthala/RaeBareli? Usually one or two new coaches, but that's it. How do so many new rakes get distributed to so many regions?

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