ITs always have been a discucing matter THE SPEED RISTRICTION between Gujhandi Paharpur,, koderma ghats. So let's begin with GOMOH,, as your train passes gomoh towards parasnath maximum speed allowed is 120kmph,,which goes constant till Parasnath after that it fluctuates 100-120 and 90 on some curves... after hajaribagh again 120 till koderma 100 on pass of station and 120 till that notice board.. Gati seema ka palan karein.. And enters of Gujhandi allows 85kmph,,and tunel village Dilwa gives pass of 65 ,,all 3 tunels made in 1906 allows maximum 45-50kmph ,ghat section keep fluctuating 35-45-65-80,after jadavpur halt,, famous mountain temple of god hanuman it raises to 90kmph and last station of ghats Gurpa allow 90kmph and goes on till 120 constantly till gaya except curve.