Road Safety (Vehicles) Regulations 2009
http://www.legislation.vic.gov.au/Domino/Web_Notes/LDMS/LTObject_Store/LTObjSt5.nsf/DDE300B8%2046EED9C7CA257616000A3571/FB1208F39F2B1295CA257782001CE282/$FILE/09-118sr004.pdfSchedule 2, Regulation 23 (its on page 234, which is page 260 of the pdf)
23 Partial exception to compliance with ADRs—
personally imported vehicles
(1) In this clause—
personally imported vehicle means a vehicle built
after 1968 that is imported into Australia
under regulation 13 of the Motor Vehicle
Standards Regulations 1989 of the
Commonwealth by a person who owned and
used the vehicle for a continuous period of at
least—
(a) in the case of a vehicle owned by the
applicant before 9 May 2000, 3 months;
(b) in any other case, 12 months—
before it was imported into Australia.
(2) A personally imported vehicle must be fitted
with—
(a) seat belts that are as effective as seat belts
that meet an Australian Standard or British
Standard for seat belts as in force when this
clause commenced; and
(b) seat belt anchorages that meet the number
and location requirements of second or third
edition ADR 5; and
(c) child restraint anchorages that meet the
number, location, accessibility, thread size
and form requirements of second edition
ADR 34 or third edition ADR 5 or 34; and
(d) head restraints that meet the number,
location and size requirements of second or
third edition ADR 22.
(3) However, a personally imported vehicle need only
meet the requirements of an ADR referred to in
subclause (2) if the ADR recommends that it
should apply, or applies, to a vehicle of the same
type.
(4) A personally imported vehicle need not otherwise
comply with an ADR applied by clause 19(1)
or 20(1).