Heavy Vehicle (Mass, Dimension and Loading) National Regulation
sch.6-sec.10Axle configuration of B-doubles
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sch.6-sec.10 Axle configuration of B-doubles
The axle groups in a heavy combination that is a B-double with 2 tri-axle groups must be positioned so that the following formulae are complied with— where— X means the distance in metres (measured to the nearest tenth of a metre) between the centre-lines of the last axle of the B-double’s prime mover and the first axle of its first semitrailer. Y means the distance in metres (measured to the nearest tenth of a metre) between the centre-lines of the last axle of the B-double’s first semitrailer and the first axle of its second semitrailer.