Warns of the start of a section where overtaking is prohibited.
This warning marks the beginning of a no-passing zone. In the United States, it stands on the left-hand side of the road.
The W14-3 sign is a yellow pennant-shaped triangle pointing to the right. It has a black border and the words NO PASSING ZONE in black.
Official sign in each country; the code is its number in the national rules. Signs that come in two directions show the left and the right version.
Sign images from Wikimedia Commons, used under their licences.
