 The first version of the Criminal Law (Temporary Provisions) Act ("CLTPA") was enacted as the Criminal Law (Temporary Provisions) Ordinance 1955, when Singapore was a Crown colony of the British Empire.Notable portions of the Ordinance included Part III which aimed to control the movement of persons and vessels in the Straits of Johor, and was intended to assist the Federation of Malaya in denying supplies to Communist terrorists in the jungles of Johor.Part V made it necessary to give 14 days' notice of a strike or lock-out in an essential service to enable emergency arrangements to be made for ensuring a minimum service necessary for the well-being of the public.