Section 367(b) in Police Regulations, Bengal , 1943
(b)Chaukidars and dafadars may be employed in guarding the railway line when Royalty, the Viceroy or the Governor are travelling, provided the officer employing them sends due information to the president of the union board or the president, panchayat, as the case may be. (See rule 45 of the Union Board Manual, Volume II.)