| Countries shown | Türkiye |
| Type | Prohibitory sign |
This is a customs sign.
“GÜMRÜK” is Turkish for customs. “DOUANE” is French for customs. So the sign is telling drivers or travelers that they are approaching a customs checkpoint or customs control area.
The red circular border is a warning/restriction style used for official traffic signs. The white center with bold black text makes the message easy to read. The two languages suggest it is meant for international travelers. In practice You would usually see this sign near: