It was my guess as NR in New Delhi has 3 spare rakes
1. Vande Bharat 16 coach
2. Shatabdi composed according to route and run as spare when main rake is off for the day due to maintenance or late arrival in night.
3. Tejas ACC rake.
please wait...Translate to HindiMera andaza tha ki New Delhi mein NR ke paas 3 spare rakes hain:
1. Vande Bharat 16 coach
2. Shatabdi, jo route ke hisaab se banaya gaya hai aur spare rahega jab main rake maintenance ke liye off ho ya raat mein late aaye.
3. Tejas ACC rake.