Western Australian Current Regulations

ROAD TRAFFIC (VEHICLES) REGULATIONS 2014 - REG 444

444 .         Warning signs for oversize agricultural combinations

        (1)         An agricultural combination which exceeds 3.5 m in width or 25 m in length must not be used on a road unless —

            (a)         warning signs displaying the word “OVERSIZE” are affixed to the front of the towing vehicle and the rear of the towed vehicle or, in the case of a combination consisting of more than one towed vehicle, the rear towed vehicle; and

            (b)         it is preceded, at a distance of not more than 500 m or less than 300 m, by a pilot vehicle and followed, at a distance of not more than 300 m or less than 200 m, by a pilot vehicle.

        (2)         Warning signs mentioned in subregulation (1) and warning signs on pilot vehicles must —

            (a)         subject to subregulation (3), be made of a rigid material; and

            (b)         have in black lettering on a yellow reflective background in upper case and at least —

                  (i)         200 mm high with a brush stroke at least 28 mm wide for the word “OVERSIZE”; and

                  (ii)         100 mm high with a brush stroke at least 15 mm wide for the words “LOAD AHEAD”;

                and

            (c)         be of these dimensions —

                  (i)         1 200 mm long and 450 mm wide in the case of a single line of lettering;

                  (ii)         1 200 mm long and 600 mm wide in the case of a double line of lettering.

        (3)         If a rigid sign cannot adequately be mounted on the rear of a towed vehicle a flexible sign, not being made of paper or cloth, which otherwise complies with subregulation (2) may be used on that vehicle.

        (4)         A pilot vehicle may carry a load or tow a trailer or an agricultural implement as long as the vehicle, together with its load, if any —

            (a)         has a loaded mass that does not exceed 4.5 t; and

            (b)         together with the trailer or implement, if any, does not exceed 25 m in length or 2.5 m in width.

        (5)         Despite subregulation (1)(b), a pilot vehicle to the rear of the combination is not required for a combination which exceeds 3.5 m in width or 25 m in length if the combination is fitted with a flashing amber light in accordance with regulation 433 and that light is operating whenever the combination is being moved on a road.