India Today on MSN

Why does Indian Railways use 10-digit PNR numbers? A simple explanation

Indian Railways PNR number explained: why the 10-digit PNR system exists, what each digit means, and how it helps manage ...
IEEE

Energy Saving Model for Railway Signalling using Wireless Sensor Networks

Abstract: Railway Signalling technology undergone a drastic transformation from semaphore type mechanical signals to Color light signals, but energy consumption also increased along with fast pace of ...