The second half of the order sign group uses a red ring around a white background to show that something is banned.
These signs are essential for identifying restrictions on vehicle types, speeds, and manoeuvres.
What this sign system means
A white circle with a red border and a black symbol or number shows a prohibition, such as no entry, no overtaking, or a maximum speed limit.
The red ring is a universal warning that an action is not permitted, distinguishing these from the positive instructions of blue circles.
What to do when you see it
Avoid the action or vehicle type shown on the sign, since these are legally enforceable restrictions.
- Identify what is prohibited by the symbol or number inside the ring
- Do not perform the banned action, even briefly
- Watch for red ring signs combined with time plates showing when restrictions apply
- Remember that maximum speed limit signs also use this red ring format
How this sign is tested
The theory test often includes recognition of prohibitory signs such as no entry, no U turns, and weight restrictions.
You may be asked to identify what a specific red ring sign forbids.
Common mistakes
Some learners confuse a plain red circle no entry sign with a red ringed prohibitory sign showing a specific banned action.
Ignoring time restricted prohibitions, shown on a plate below the sign, is another common mistake.
Test yourself on this one
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Practise road sign questionsFrequently asked questions
What does a red ring on a circular sign mean
It shows a prohibition, meaning the action or vehicle type shown is not allowed.
Are speed limit signs prohibitory
Yes, a white circle with a red ring and a number shows the maximum speed permitted, which is a legal limit.
Can a prohibition sign have a time plate
Yes, some prohibitions only apply during certain hours, shown on a supplementary plate beneath the sign.