The traffic sign you referred to is known as "Note through verbal indication 1012-53." This sign indicates that there is a requirement for verbal communication for a specific purpose, such as notifying drivers or pedestrians about certain rules or instructions relevant to the area.

In Germany, this sign may be used in contexts where precise information needs to be transmitted verbally, often for safety reasons. Such a situation could involve construction sites, events, or areas where unusual hazards are present.

Drivers or pedestrians should pay attention to any verbal instructions given in conjunction with this sign, as they may be crucial for ensuring safety and compliance with temporary traffic regulations. Always be vigilant for any announcements or instructions from authorities when this sign is present, and follow them accordingly.

If you have any further questions or need clarification on specific traffic rules, feel free to ask!