Accredited Mass Management Scheme (AMMS)

The Accredited Mass Management Scheme (AMMS):

  • Allows for approved tandem drive and tri drive combinations to operate at three (3) concessional mass levels; and
  • Does not prescribe specific loading methods nor restrict commodity types.

Instead, AMMS allows for any product and any proven loading control method to be used.

To be eligible for AMMS, operators must be accredited under the WA Heavy Vehicle Accreditation (WAHVA) Mass Management Module.

Applying for an AMMS Permit

Operating Conditions


AMMS Approved Weighbridge list

An approved weighbridge can be used by transport operators as their sole loading control method when addressing the criteria for the relevant standard in the Mass Management Module.

For a weighbridge to be included on the AMMS Approved Weighbridge List (PDF) it must be able to determine and record both:

  • the gross mass of the vehicle; and
  • individual axle group weights.

The weighbridge operator must also provide us with current certification or calibration documentation with their AMMS Weighbridge application form (PDF)

An approved AMMS weighbridge will be subject to an audit from time to time to ensure ongoing compliance with the requirements.

Approved concessional RAV networks are available via the RAV Mapping Tool or via the road tables below.

Concessional Road Networks

Acknowledgement of country

The Government of Western Australia acknowledges the traditional custodians throughout Western Australia and their continuing connection to the land, waters and community. We pay our respects to all members of the Aboriginal communities and their cultures; and to Elders both past and present.

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