Section 10(1)(b) in The West Bengal Security Act, 1950
(b)any railway (as defined in the Indian Railways Act, 1890 (IX of 1890)), aerial ropeway (as defined in the Bengal Aerial Ropeways Act, 1923 (Ben. Act VII of 192)), tramway, road, canal, canal embankments, protective bunds, sluice-gates, lockgates, bridge, culvert, cause-way, port, dockyard, lighthouse, aerodrome (as defined in the Indian Aircraft Act, 1934 (XXII of 1934)), airfield, air-strip or any installation thereon or any telegraph line or post (as defined in the Indian Telegraph Act, 1885 (XIII of 1885));