(1) This Part is not intended to limit or exclude the operation of another law of the Commonwealth relating to:
(a) the search of persons or premises; or
(b) arrest and related matters; or
(c) the stopping, detaining or searching of aircraft, vehicles or vessels; or
(2) To avoid doubt, it is declared that even though another law
of the Commonwealth provides power to do one or more of the things referred to
in subsection (1), a similar power conferred by this Part may be
used despite the existence of the power under the other law.