Artikel 11

1. The danger signs shall be in the shape of an equilateral triangel with one point upwards except in the case of sign “Priority road ahead” (I, 22) which shall have a point downwards.
2. These signs shall have a red border with white or light yellow ground. Symbols shall be black or dark.
3. For signs of the standard size, the length of each side of the triangle shall be not less than 0.90 m and for the reduced size, not less than 0.60 m.
4. The signs shall be placed on the side of the road appropriate to the direction of the traffic concerned and facing that traffic. They may be repeated on the other side of the road.
5. Unless otherwise provided hereafter in this Protocol, the signs shall be placed at not less than 150 m and not more than 250 m from the hazard unless this is impracticable on account of local conditions. In such exceptional cases the sign shall be erected at less than 150 m, but as far as possible from the hazard and special provisions shall be made.
6. The height of signs shall be not more than 2.20 m and, outside built-up areas, not less than 0.60 m.
7. The signs shall be placed in such a way that they cannot be obscured nor be a hindrance to pedestrians.