In France, a red-bordered circular sign showing a white horizontal bar means no entry.
The sign prohibits vehicles from entering the road or carriageway in the direction from which the sign is viewed. It is commonly placed at the exit end of a one-way street to prevent drivers from travelling the wrong way into oncoming traffic.
The sign is different from a general road-closed sign and from a no-entry restriction that might be communicated by words. Its simple red-and-white design is widely recognized internationally and is closely related to the Vienna Convention sign system.
Drivers should distinguish no entry from one-way information. A one-way sign tells drivers the permitted direction of travel, while the barred-circle sign directly prohibits entry from a particular approach. Local road layouts may place both signs near an intersection to make the traffic direction clear.