Vehicle Standards Bulletin 6

Vehicle Standards Bulletin 6: National Code of Practice Heavy Vehicle Modifications, known as VSB6, is the national standard for the most common modifications made to heavy vehicles.

Under the NHVR Code of Practice for the Approval of Heavy Vehicle Modifications, the NHVR has set VSB6 as the primary standard used by Approved Vehicle Examiners (AVEs) to approve modifications to heavy vehicles.

VSB 6 is published by the Australian Motor Vehicle Certification Board (AMVCB) and can be viewed at

Review of VSB6

In 2015, the NHVR assumed the role of chair of the VSB6 Working Group, responsible for the maintenance of VSB6 and ensuring it is kept current and up-to-date with developing vehicle technologies.

Comprised of representatives from state and territory transport authorities, industry associations and relevant subject matter experts, the working group commenced a comprehensive review in July 2015 to update and redesign VSB6 over a two-year period.

For more information about the review, including timelines, download Vehicle Standards Bulletin 6 Review - Project overview (PDF, 490KB)

Have your say: 6 February – 17 March 2017

The NHVR consulted with the working group and subject matter experts to develop a draft version of VSB6, ensuring this revision is usable and relevant to industry.

We are now seeking input and feedback from the broader heavy vehicle industry, including vehicle modifiers and approved vehicle examiners (AVEs), who use VSB6 every day.

From Monday 6 February until Friday 17 March 2017, a public consultation draft of the revised VSB6 is available for review.

For more information about the revised draft and consultation period, download Vehicle Standards Bulletin 6 Review – Public consultation (PDF, 495KB).

Making a submission

The NHVR will only accept submissions made on the NHVR VSB6 feedback form (PDF, 116KB).

Submissions must address the technical content and usability of the standard.

Submissions may be published by the NHVR and will be circulated to the working group or other relevant parties during the review process. If you don’t want your personal information to be published, please indicate this clearly in your submission.

Public consultation draft

Set out below is current draft of the revised VSB6, as developed by the NHVR and VSB6 working group.

Please note: This is a consultation draft only. Before the final VSB6 is published, the NHVR will be undertaking a full quality assurance process, including proof reading, insertion of appropriate images and diagrams, and final reformatting. These documents are drafts only and may be changed following feedback provided during public consultation. The drafts are not to be regarded as an authorised standard until approved and issued by relevant heavy vehicle regulators.

Section T – Tow Trucks (PDF, 1,3MB) (to be reviewed at a later date).

Industry feedback indicated that Section T – Tow Trucks requires significant consideration and updating to align with current design and construction techniques.

Given the project timelines, the VSB6 Working Group, comprising the NHVR and industry associations, determined that Section T would not be part of the current review, though this section has been reformatted with minor edits to ensure consistency.

Following the completion of the current review, a specialist tow truck working group will be convened at a later date.

The upcoming review will include:

  • updates to reflect current configurations, design and construction of tow trucks
  • alignment with relevant Australian Standards
  • the still relevant tow truck requirements from ADR44/.. Specific Purpose Vehicle, allowing for their removal from the ADR as agreed by the Australian Motor Vehicle Certification Board (AMVCB) .

Section T will then become the national standard for the design and construction of tow trucks.

Contact us

For more information about the VSB6 review and public consultation, email the NHVR at