Western Australian Current Regulations Western Australian Current Regulations (1) On a
semi‑trailer or a dog trailer —
(a) the
distance between the point of articulation at the front of the trailer and the
rear overhang line must not be over 9.5 m; and
(b) the
distance between the point of articulation at the front of the trailer and the
rear of the trailer must not be over 12.3 m.
(2) A projection
forward of the point of articulation at the front of a semi‑trailer must
be contained within a radius of 1.9 m from the point of articulation.
Dimension limits for a semi‑trailer
(3) If a
semi‑trailer has 2 or more points of articulation at the front of the
trailer, it must comply with subregulations (1) and (2) when
measured at one of the points.
(4) A trailer must not
have over 12.5 m of its length available for the carriage of animals if it
is —
(a)
built to carry cattle, sheep, pigs or horses on 2 or more partly or completely
overlapping decks; and
(b) over
4.3 m high.
(5) For
subregulation (4), the length available for the carriage of animals on a
trailer is measured from the inside of the front wall or door of the trailer
to the inside of the rear wall or door of the trailer, with any intervening
partitions disregarded.
(6) However, when
measuring the length of a trailer with a rounded front, the length is not to
include the rounded portion.