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.