Institute of Transport Administration

Educating Transport Management since 1944


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Why vehicles and trailers need to be laden at annual test

30 Sep 2022

It’s crucial to test the brake test performance of heavy vehicles and trailers during the annual test.

Most vehicles and trailers presented for their annual test must be loaded to at least 65% of their design axle weights with cargo (though this doesn't have to be the cargo you usually carry).

This is to enable the brake test to be carried out efficiently and obtain a meaningful assessment of the overall brake efficiency.

In DVSA’s latest blog post, Vehicle Testing and Roadworthiness Policy Specialist Richard Clements, explains what is involved and why vehicles and trailers should be presented for test laden.

Further information: