You will be required to comply with this standard if you intend to operate a B-double or road train. The brake line couplings on the same part of a vehicle in a B-double or road train must be polarised in accordance with this standard.
This Standard specifies the requirements for the design, dimensions and identification of couplings for air-pressure braking systems. Please note that the standard referenced in the legislation has been superseded by AS 4945-2000. Please consult the Contact Officer for more information and to ascertain the level of compliance (if any) that may be required.