Approval of Heavy Vehicle Modifications - South Australia


You will need this approval 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 need this approval. Examples include:

  • additional lighting
  • aerials
  • air conditioning system
  • alarm systems.

There are two categories of heavy vehicle modifications that need 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 need approval from an approved vehicle examiner to modify your vehicle.
  • 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 need both the approval of an approved vehicle examiner and the National Heavy Vehicle 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.

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
  • comply with noise and emission standards, unless otherwise exempted.


As specified


Fees Details for this service in table format.

Task Type Business Structure Description
Apply Application All

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


Administering agency

National Heavy Vehicle Regulator

Contact details

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