Guidance

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.

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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.

Published 3 September 2015
Last updated 13 July 2017 + show all updates
  1. Updated guidance on how to avoid the top 10 reasons heavy trailers don't pass the Individual Vehicle Approval (IVA) inspection.
  2. First published.