The NHVR Code
Sets out the NHVR framework for the approval of modifications
The NHVR Code of Practice for the Approval of Heavy Vehicle Modifications sets out the National Heavy Vehicle Regulator’s (NHVR) framework for the approval of modifications made to heavy vehicles, and covers a broad range of potential modifications – from the installation of accessories, through to complex changes that have potential major impacts on critical vehicle safety systems.
As a guide, heavy vehicle modifications that need approval are:
- Complex modifications based on accepted vehicle engineering practices that can affect the safety of a heavy vehicle if not performed properly
- Modifications that are outside the scope of the code of practice that may cause the vehicle to be non-compliant within the 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, or may affect the vehicle design, strength, structural integrity and handling characteristics.
Modification approvals, certificates, plates and labels
Must be completed in accordance
with the NHVR Code
Modifications to heavy vehicles must be completed in accordance with the NHVR Code, the specifications and guidance of the original vehicle manufacturer, and any other relevant standards.
When a common or complex heavy vehicle modification is approved by an Approved Vehicle Examiner or State/Territory Transport Authority, an approved modification certificate must be issued and an approved modification plate/label affixed.
Heavy vehicle modifications
under the Code of Practice
Heavy vehicles modified in accordance with the NHVR Code of Practice maintain the vehicle’s compliance with heavy vehicle standards, and require approval by an Approved Vehicle Examiner. If the vehicle passes inspection, a modification certificate is issued and a modification plate affixed to the vehicle.
Modifications made under the NHVR Code do not require direct approval by the NHVR.
Heavy vehicle modifications not covered by the Code of Practice
Modifications to heavy vehicles that sit outside the NHVR Code of Practice require approval by both the NHVR and an Approved Vehicle Examiner.
These modifications may cause the vehicle to be non-compliant with the heavy vehicle standards, and are usually significant or extensive modifications that have the potential to seriously affect the safety of the vehicle and its operation on the road by affecting the vehicle’s design, strength, structural integrity and handling characteristics.
When the NHVR approves a modification, a Statement of Requirements will be issued detailing how the vehicle modification should be undertaken and any related inspection requirements.
These modifications require approval by an Approved Vehicle Examiner who will issue the modification certificate and ensure a modification plate is affixed to the vehicle if the vehicle passes inspection. The vehicle may require a further inspection subject to particular jurisdiction registration laws.