Road signs, School or children crossing
What does the school children warning sign mean?
Children may be crossing ahead, often near a school.

A red triangle with two children.
What you must do
Slow down and be ready to stop, especially at the start and end of the school day.
Where you will see it
Near schools and playgrounds.
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: Know Your Traffic Signs.
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.