Jayada rake ki jaroorat nahi hogi, kiyun ki bgp anvt duplicate vs chal jati hai to 3rake hona chahiye aur agar ise asr juc ya fzr extend hoti hai to 4 rake lagega es liye sirf 1 rake ki hi jaroorat hogi agar koi new trains bgp asr ya fzr running delly hoti hai to extra 4 rake lagega so better ye hai ki isi ko extend asr ya fzr kar de.