Approval of Heavy Vehicle Modifications - New South Wales

Service summary

You will require this approval if you intend to modify a heavy vehicle. This approval is needed for modifications that can affect the safety of the heavy vehicle.

Minor modifications that do not cause the vehicle to become non-compliant with vehicle standards do not require this approval. Examples include additional lighting, aerials, air conditioning and alarm systems.

There are two categories of heavy vehicle modifications that require approval:

  • Modifications that are outlined in the attached code of practice. These include complex modifications that can affect the safety of a vehicle if not performed property. The modifications are based on accepted vehicle engineering practices and the requirements. If your modification falls under the code of practice, then you will require approval from an approved vehicle examiner to modify your vehicle; and
  • Modifications that are outside the scope of the code of practice that may cause the vehicle to be non-compliant with a heavy vehicle standard. These modifications are usually significant or extensive modifications that have the potential to seriously affect the safety of the vehicle and its operation on the road. They may affect the vehicle design, strength, structural integrity and handling characteristics. These modifications require both the approval of an approved vehicle examiner and the Regulator.

A heavy vehicle is a vehicle with a gross vehicle mass (GVM) or an aggregate trailer mass (ATM) of more than 4.5 tonnes.

Please consult the Contact Officer for more information.

Service type


A licence defines the need to obtain recognition / certification and registration to undertake a certain business activity.

Eligibility requirements

To be eligible for this approval, you must:

  • Prove that the use of a modified vehicle will not pose significant safety risks; and
  • Comply with noise and emission standards, unless otherwise exempted.

Please consult the Contact Officer for more information regarding eligibility requirements.



Please consult the Contact Officer for information on fees to be submitted.


Administering agency

National Heavy Vehicle Regulator

Act(s) name

Heavy Vehicle National Law (NSW) (New South Wales)

Contact details

Enquiries, Vehicle Standards Unit
National Heavy Vehicle Regulator

Mailing address:
PO Box 492
Fortitude Valley
Queensland 4006


1300 696 487


1300 736 798

Supporting information


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