A symbol for identifying facilities approved to preform the <a href="https://en.wikipedia.org/wiki/United_Kingdom" class="extiw" title="w:United Kingdom">United Kingdom</a>'s <a href="https://en.wikipedia.org/wiki/MOT_Test" class="extiw" title="w:MOT Test">MOT Test</a>, a <a href="https://en.wikipedia.org/wiki/vehicle_inspection" class="extiw" title="w:vehicle inspection">vehicle inspection</a> test. It features the logo for the MOT Test, 'three triangles', representing the original three items tested, brakes, steering and lights.
The Ministry of Transport, now Department for Transport.
circa 1960 <div style="display: none;">date QS:P,+1960-00-00T00:00:00Z/9,P1480,Q5727902</div>
Diagram 864.1 from the <a href="https://en.wikipedia.org/wiki/Traffic_Signs_Regulations_and_General_Directions" class="extiw" title="w:Traffic Signs Regulations and General Directions">Traffic Signs Regulations and General Directions</a> 2002