Ek train kaa ISO expire hotaa hai samajh aataa hai pr kyaa kisi zone k saari trains k ISO Certification ek saath expire hote hai kya???? ECR me Saptkranti, Vaishali, BSK, Sampoorna kranti sbkaa ISO license expire ho chukaa hai...
NR ko dekho NR apne prestigious LKO Mail kaa ISO Licences kabhi expire nhi hone detaa expiry tym aane se phle hi NR usko reniew kr detaa hai...Same NCR Prayagraj k liye aur NER Gorakhdham k liye krtaa hai..