The sign you are referring to is the "Notice through verbal indication" sign (sign number 1012-32). This sign is used in Germany to indicate that a driver may need to pay attention to verbal instructions given by an authorized person, such as a traffic officer.

The presence of this sign usually means that drivers should comply with directions that may differ from the usual traffic regulations, such as temporary traffic controls due to construction, events, or other situations affecting the normal flow of traffic. It's important to follow these verbal directions carefully to ensure safety and compliance with local traffic rules.

If you have any further questions about this sign or other traffic regulations, feel free to ask!