What should you do?
Check the width of your vehicle, including mirrors and any load, before continuing; if it is wider, take another route.
How to recognise it
A red-ringed circle with two black triangles pointing inwards horizontally and 2.15m between them.
Common confusion
The width sign has horizontal pointers, while the Height restriction sign has pointers at the top and bottom.
Explanation written by the My Driving Test editorial team using the Department of Transport Traffic Signs Manual conventions and the RSA Rules of the Road.
