I would really like to know that,, what are the criteria a train become express or passenger on same route.. Except A/c. Because see this speed of slowest express division train's.. That of ranchi division =-1)Ranchi garbeta passenger 44km/hr.2)Lohardaga passenger 44/hr,and 3)Ranchi Varanasi Intercity Express 44/hr,4)ranchi dhanbad intercity 38/hr slower then passenger. 5)Maurya Express 35/hr,6)Tata passenger 35/hr.Hatia Patna express /patliputra are at 35/37/hr..How railway dicide speed of train.. In pic u see Tata passenger,, .