This Act contains rules of criminal procedure which override ordinary law, while still maintaining the rights of the defence, in order to facilitate the work of the judicial authorities with respect to investigation and instruction and to the enforcement of judicial decisions.
为便于司法机构开展调查、预审或执行司法裁定，该法规定了一些取代普通法的刑事诉讼规则，但同时保留辩护的权利。