Institute of Transport Administration

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Categorisation of Defects - HGV and PSV guidance updated

12 Jan 2021

Categorisation of Defects – DVSA guidance updated

The guidance provides information on how vehicle defects are categorised in roadside checks and the actions taken when roadworthiness defects are found.  The guidance has been revised and will come into force from 1st February 2021.  The current guidance remains in place until 31st January 2021.


What’s changed

The banning of tyres aged over 10 years on the front axles of lorries, buses, coaches and all single wheels of minibuses (9 to 16 passenger seats) from 1 February 2021 is covered in the revisions.

Additional notes on dash mounted tables, laptops, tablets and mobile phones have been added to issues affecting the view of the road.


Other updated sections include:

•            brakes

•            lamps

•            steering control

•            suspension.


The revision record (Appendix A of the categorisation of defects) has also been updated, which identifies all the changes in this guide.


Revised categorisation of Defects – from 1st February 2021



Current Categorisation of Defects – valid until 31st January 2021