Supplementary information signs (signs) - traffic signs in accordance with Section H of the Vienna Convention on Road Signs and Signals .
They are additional to the signs of the above categories. Separately not used. Clarify the actions of the main signs in time (for example, only on weekdays) or extending them only to certain categories of vehicles (for example, only for trucks), or provide other additional information. The shape is rectangular, the background color is white, the color of the picture is black, the border is black.