Individual Vehicle Approval (IVA) for heavy trailers: help to get a pass

How to avoid the top 10 reasons heavy trailers don't pass the Individual Vehicle Approval (IVA) inspection.


This guide tells you how to avoid the top 10 reasons that heavy trailers and other vehicles in the O3/4 inspection category fail the IVA inspection.

Full compliance with this guide doesn’t guarantee a pass. You’ll need to view the IVA Inspection manual for the full requirements and testing procedures needed to get your trailer passed.

You must apply for vehicle approval if you’ve:

  • built a trailer
  • rebuilt a trailer
  • radically altered a trailer
  • imported a trailer

Vehicles in the O3/4 category are defined as trailers designed and constructed for the carriage of goods, and weigh over 3.5 tonnes.