Section 550(a) in Police Regulations, Bengal , 1943
(a)over all open lines, i.e., lines open for the public carriage of passengers, animals or goods, within the railway fencing, and where there is no such fencing, up to 10 feet from the outer rail on either side; but not over any mill or colliery sidings other than those on railway land worked for the purposes of the Railway concerned ;
