Bhai NR maintenance bhi hoga to bhi 152Up aur 151Dn nahi ho sakti hai bhai.
Abhi bhi jo NR maintenance wali trains WR ki side jati hai usme bhi odd number UP aur even number Down hota hai.
ek exception 12141 Dn aur 12142 Up hai meri najar me.. aur bhi trains hongi abhi