WA Heavy Vehicle Accreditation (WAHVA)

In WA, WAHVA is mandatory for individuals and organisations which require a permit or order to perform any transport task as part of a commercial business or for profit within Western Australia, including interstate operators.

​WAHVA involves three mandatory modules Fatigue, Maintenance and Dimension and Loading, which transport operators are required to incorporate into their daily work practices.  There is one optional module -The Mass Management Module - which is only required to be undertaken if an operator wishes to operate within the Accredited Mass Management Scheme (AMMS).

Please note: participation in WAHVA does not exempt transport operators from complying with other requirements of the Road Traffic (Vehicles) Act 2012


Becoming accredited

The WAHVA audit process allows for evidence to be provided to demonstrate how the systems you have nominated are managing your responsibilities under the Fatigue, Maintenance and Dimension & Loading Modules.  To help get you started the documents below have been created to help you determine if you need WAHVA, what you need to do and how to engage a certified WAHVA Auditor.

 The Accreditation Modules, Guidelines and Forms page ,contains templates,  the WAHVA modules and operator templates & guides and is available to help transport operators and Auditors understand, meet and maintain the requirements of WAHVA.


Compliance with WAHVA - 'Show Cause' Process

As part of our efforts to improve safety in the Heavy Vehicle Industry, Main Roads has introduced a 'Show Cause' process.

Transport operators may be issued a Show Cause letter if they are identified as not complying with the standards of WAHVAS, which includes, but is not limited to:

  • being involved in two or more severe or substantial mass, dimension or loading requirement (MDLR) offences under the Road Traffic (Vehicles) Act 2012;
  • is issued more than five Vehicle Defect Notices in any six month period; or
  • has been involved in a roll over incident;

Accredited Operators may be issued a Show Cause Letter requiring the operator to explain the occurrences and what actions have been taken to prevent further occurrences of similar nature. 


Quick links


Modified: 18 Nov 2019