The only problem is of coal belt. Between DHN-CRP the coal belt are under fire some where... This route is very much risky for passengers. I am saying for just 1hrs between DHN &CRP. Whereas shatabdi running in this route takes more time and reaches CRP late...& between BKSC- BOKARO THERMAL the speed is low due to damodar river and single line where coal fright train gains more priority.. So.. Speed is low