Australian Standard AS D 8-1971 Hose Couplings for use with Vacuum and Air-Pressure Braking Systems on Prime Movers, Trailers and Semi-Trailers - Australian Government


Note that this standard has been updated and you will need to meet the requirements set out in AS 4945-2000 Commercial road vehicles - Interchangeable quick connect/release couplings for use with air-pressure braking systems.

You may be required to comply with this standard if you operate a long distance interstate road transport business and you intend to use a B-double.

If the B-double uses compressed air as the brake operating fluid, its brake system must include protection against loss of supply line air, or control signal air. The coupling for the hoses for the supply and control lines must be polarised according to the requirements set out in this standard.


Service type

Code of Practice

A code of practice is a set of rules which details how people in a certain industry should behave. A code of practice can be defined as a result of legislation or by industry regulators and bodies.

Act(s) name

Road Vehicle Standards Act 2018 Australian Government

Regulation(s) name

Vehicle Standard (Australian Design Rule 62/00 - Mechanical Connections Between Vehicles) 2006 Australian Government

Administering agency

Department of Infrastructure, Transport, Regional Development, Communications and the Arts

Contact details

Contact Email, Phone and Address Details for this service in simple two column table format, header then data.