Normal SF me jisme SL Class rahta hai One EOG hi on rahta hai dusra backup rahta hai.. complete AC train me both EOG chalu rahta hai. ek EOG bhi emergency situation me next station tak load le sakta hai complete AC train ka..
so normal SF me ek EOG band rakhna koi badi baat nahi hai.. HOG failure hua aur train me sirf SLR hai to kya hoga?