You will require this approval if you have built a heavy vehicle according to an approved performance based standards (PBS) design approval. To gain this approval a PBS approved certifier will inspect the heavy vehicle to ensure that it was built according to the design specifications. If the certification inspection is satisfactory, an approval will be issued.
A heavy vehicle is a vehicle with a gross vehicle mass (GVM) or an aggregate trailer mass (ATM) of more than 4.5 tonnes.
Please consult the responsible agency for more information and to ascertain the level of compliance (if any) that may be required.