South Australian Consolidated Regulations South Australian Consolidated Regulations62—Specifications for warning signs
(1) A road train or
long vehicle warning sign must be manufactured in 1 or 2 parts from sheet
steel 0.8 millimetres thick or another material of at least the same
stiffness, unless it is designed to be fixed to a vehicle using an adhesive.
(2) The warning sign
must be at least 1.02 metres wide and at least 250 millimetres high.
(3) A road train
warning sign must display the words "road train", and a
long vehicle warning sign must display the words "long vehicle", in black
capital letters at least 180 millimetres high in typeface Series B (N) that
complies with Australian Standard AS 1744 Forms of Letters and Numerals for
Road Signs.
(4) If the warning
sign is in 2 parts, one word of the expression "road
train" or " long vehicle" must be on one part and the other word of the
expression must be on the other part.
(5) The warning sign
must display the sign manufacturer's name or logo, and the brand and class of
retro-reflective material used, in block letters not over 10 millimetres high.
(6) The warning sign
must have a black border.
(7) The warning sign
must be coated with yellow retro-reflective material of class 1 or 2 that
meets Australian Standard AS 1906 Retro-reflective Materials and Devices for
Road Traffic Control Purposes.
(8) The warning sign
must be fitted so:
(a) no
part of the sign is:
(i)
over 1.8 metres above ground level; or
(ii)
under 500 millimetres above ground level; and
(b) if
the sign is in 2 parts—the parts are fitted at the same height above
ground level.
Positioning of a warning sign