What should you do?
Stay behind slower vehicles until the restriction ends, keeping a safe following distance and not pulling out to look past them.
How to recognise it
A red ring with two black cars side by side and a red diagonal bar.
Common confusion
Learners sometimes think it only bans passing cars; it applies to overtaking any moving motor vehicle on that stretch.
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.
