Western Australian Current Regulations

ROAD TRAFFIC (VEHICLES) REGULATIONS 2014 - REG 373

373 .         Selection of kingpins for B‑doubles and road trains

        (1)         A kingpin used in a B‑double or road train must —

            (a)         be a 50 mm kingpin, 75 mm kingpin or 90 mm kingpin; and

            (b)         have a D‑value complying with AS 2175‑1990 Articulated Vehicles — Kingpins .

        (2)         A 50 mm kingpin or 90 mm kingpin used in a B‑double or road train must —

            (a)         be built to meet the dimension requirements in AS 2175‑1990 Articulated Vehicles — Kingpins ; and

            (b)         not be worn away more than recommended by the standard.

        (3)         A 75 mm kingpin used in a B‑double or road train must —

            (a)         be built to meet the dimensions in the essential diagram; and

            (b)         not be worn away more than mentioned in subregulation (4).

Dimensions of a 75 mm kingpin

        (4)         In testing a 75   mm kingpin mentioned in the essential diagram in subregulation (3) to decide whether its D‑value complies with subregulation (1)(b) —

            (a)         diameter F must not wear more than 3 mm; and

            (b)         diameter G must not wear more than 2 mm; and

            (c)         height H must not wear more than 2.3 mm.