Road signs, Roundabout ahead
What does the roundabout warning sign mean?
A roundabout is ahead. Be ready to give way to traffic from your right.

A red triangle with three arrows turning clockwise.
What you must do
Slow down, choose your lane and exit early, and give way at the line.
Where you will see it
On the approach to a roundabout.
Test yourself
The theory test asks you to recognise signs like this one. Try the road and traffic signs short test (with an easy and a hard set), or read the signs revision notes. Source: Highway Code rule 184.
Other common road signs
Meaning based on Know Your Traffic Signs and The Highway Code. The sign image is an official Department for Transport sign (Crown copyright) from Wikimedia Commons, reused under the Open Government Licence or the public domain. Always check the current Highway Code on gov.uk. Not affiliated with or endorsed by the DVSA.