sorry angrezi jhadne me thoda left right ho gaya, main point is, aas paas ke purvanchal ke saharo ke liye wohi hamara Option hota hai, DDU aur door pad jaata hai BSB ke comparision khas kr jab door se aa raha ho train pakadne, like I am from Jaunpur to mereko 3-3.5 hrs lag gaye depending upon traffic, night time me tough hojata hai bsb pahuchna hi, limited options hote hai unka bhi kuch fix nahi hota.