That string of ten digits printed in the top-left corner of your train ticket is not random. It is the spine of one of the world’s most complex passenger management systems — and every digit has a job ...

Indian Railways PNR number explained: why the 10-digit PNR system exists, what each digit means, and how it helps manage millions of train bookings across India efficiently every day.

Among the various details on a train ticket, one number stands out as particularly significant: the PNR number. It consists ...