Western Australian Repealed Regulations Western Australian Repealed RegulationsThis legislation has been repealed.
(1) Every vehicle
first registered on or after the date on which these regulations take effect
shall be supported by one or 2 axles or axle groups in accordance with this
subregulation.
(a) A
motor vehicle shall be supported towards the front end of the vehicle by
either —
(i)
a steerable single axle; or
(ii)
a twin steer axle group,
and, towards the rear
end of the vehicle by either —
(iii)
a single axle;
(iv)
a tandem axle group; or
(v)
a triaxle group.
(b) A
semi-trailer shall be supported towards the rear end of the vehicle by
either —
(i)
a single axle;
(ii)
a tandem axle group;
(iii)
a triaxle group; or
(iv)
a multi axle group.
(c)
Subject to paragraphs (d) and (e) every trailer (not being a semi-trailer
or converter dolly trailer) shall be supported towards the front of the
vehicle by either —
(i)
a steerable single axle; or
(ii)
a steerable tandem axle group,
and towards the rear
of the vehicle by either —
(iii)
a single axle;
(iv)
a tandem axle group; or
(v)
a triaxle group.
(d)
Notwithstanding paragraph (c), a trailer with an aggregate mass exceeding
4 tonnes, and not exceeding 16.5 tonnes may be supported, if the centre of the
axle or axle group is within 0.5 metres of the centre of the loading space, by
either —
(i)
a single axle;
(ii)
a tandem axle group; or
(iii)
a triaxle group.
(e)
Notwithstanding paragraph (c), a trailer with an aggregate mass not
exceeding 4 tonnes may be supported by either —
(i)
a single axle;
(ii)
a tandem axle group;
(iii)
a triaxle group; or
(iv)
a non-load sharing axle group.
(f) A
converter dolly trailer shall be supported by either —
(i)
a single axle; or
(ii)
a tandem axle group.
(2) On a motor
vehicle, trailer, or a combination of a motor vehicle and trailer, and
including any articulated vehicle, with an aggregate mass or gross combination
mass in excess of 4 tonnes, the distance measured longitudinally along
the vehicle —
(a)
between the centre of adjacent axles, other than those forming part of a
single axle or the same axle group (whether it is a twin steer axle group, a
tandem axle group, a triaxle group, a multi axle group, a widespread tandem
axle group or a non-load sharing axle group) shall be not less than 2.5
metres;
(b)
between the centre of the 2 rearmost axles of any of the axle groups and the
centre of the 2 leading axles of any following axle group (whether the groups
be a tandem axle group, a widespread axle group, a triaxle group or a multi
axle group) shall be not less than 4.3 metres; and
(c)
between the centre of the foremost axle of a twin steer axle group and the
rearmost axle of an adjacent tandem axle group shall be not less than 5.0
metres.
(3) Where a vehicle
with an aggregate mass exceeding 4 tonnes is fitted with —
(a) a
group of 2 consecutive axles, other than a twin steel axle group, of which the
centres of adjacent axles are included between parallel, transverse, vertical
planes, spaced not less than one metre and not more than 2.0 metres
apart, extending the full width of the vehicle; or
(b) a
group of 3 or more consecutive axles, of which the centres of those axles
located at the extremities of the group are included between parallel,
transverse, vertical planes, spaced not less than 2.0 metres and not more than
3.2 metres apart, extending the full width of the vehicle,
the axle group shall
incorporate a load sharing suspension.
(4) To comply with the
load sharing requirement for axle group maximum mass limits, all the axles
within the group shall be related through a load sharing system utilising the
same springing media on each axle within the group; but where individual axles
are not so related and are either separately or in combination fitted with
disparate springing media, documentary evidence of the system’s ability
to satisfy the load sharing requirement shall be made available to the
Director General.
[Regulation 1101 amended in Gazette
2 Feb 1982 p. 407; 19 Oct 1984 p. 3366;
31 Jan 1997 p. 685-6.]