A circular red [[road sign]] indicating that vehicles cannot enter a street (because it is one-way in the opposite direction). May include writing such as the words "DO NOT ENTER".
There are different variants around the world. The most common are:
* horizontal white stripe on red background (post #2703845)
* red circle with a diagonal red stripe on a white background (this is the version used in Japan) (post #3627577)

h4. See also

* [[stop sign]]
車両進入禁止