SER mein bohut sare spare CBC coaches hai. KGP yard lines mein, TMZ, Uluberia, Phuleswar, KGP-TATA section k different stations mein bohut sare spare CBC coaches rakha hua hai. SER mein 63 nos spare Hybrid-LHB coaches bhi para hua hai Balichak, KGP, PKU-DGHA route k kuch stations mein para hua hai in sabko khali kia jayega dusre zones ko transfer kia jayega taki anewala LHB coaches ko park karne k liye space create kia jaye. HWH to YPR route congested hai isiliye TATA, HTE se spl trains k roop mein. Aur bhi aise spl trains chal sakta hai dusre jagah k liye bhi.