Any train coming from sre side upto lrj has to do loco reversal to go to hw-ddn. Ab agar eloco ko hi reverse kar dein to hw tak chali jaayega (30 kms) lekin phir wahan diesel engine lagana hoga. So they do it at lrj itself. Ek bypass line hain Jo direct sre ko hw se jodti hain par usse sirf 12055/12017 hi use karte hain. Yeh passenger train nahin