The sign name is "Guide sign warning sign – Installation on the right." This sign indicates that there is a specific installation or structure located to the right side of the road. It serves as a warning to drivers to be observant for potential hazards or important features such as service areas, rest stops, or other facilities that may be situated off to the right.

Drivers should remain aware of changes in the road layout and be prepared to adjust their speed or direction as necessary. This sign helps to ensure safe navigation by alerting drivers to significant nearby locations that require attention.

If you have any other questions about German traffic rules or need further clarification, feel free to ask!