Section 584(a) in Police Regulations, Bengal , 1943
(a)Railway Police constable shall be deputed in turn to the neighbouring district police-stations and the Sub-Inspectors in charge shall take steps to familiarise them with the personal appearance of railway criminals or such other bad characters as make frequent use of the railway for committing crime. The officer-in-charge of the district police-station shall arrange to replace the Railway constables so deputed by some of his constables, if so required by the Railway Police officer.
