One of best punctual trains to go towards sealdah from ballia,chapra,sonpur and hajipur.This train is very punctual enroute despite the fact that too much slack has been provided b/w bju-kiul,gidhaur-jhajha and chittaranjan- asn section.This train has a heavy pateonage.But this train can be speeded up by at least 2 hours.It can easily leave ballia by 8am to reach sealdah by 4 am..bt overall it is the most beat train to go to saeldah or nearby.Purvanchal exp has good speed bt lacks punctuality mostly in hjp-mfp and bju-jhajha section and bagh exp takes too much time.It runs with a HWH WAP 4 from sonpur.