baat sirf RSA ki nahi hai,ye India ki fastest SF Express train hai aur DBG extend hone ke baad ye fastest sf train nahi rahegi.DBG to Patna route pe 130kmph ke speed se train chalegi to accident ho jaayega aur BJU/SPJ me loco change aur rake reversal karna parega.SK ka DBG Extension bhul jaao,kabhi nahi hoga.