The sign "Other vehicles - person groups free" (1028-30) indicates that certain person groups, such as pedestrians or cyclists, are allowed to use the road while prohibiting the entry of other types of vehicles. This is typically placed in areas where pedestrian traffic is allowed without any restrictions.

The sign is generally placed before sections of the road where special permissions apply, guiding drivers to understand that while pedestrians have the right to be there, other vehicles should either not enter at all or proceed with caution. As a driver, you should be aware of this sign and regulate your speed and behavior to ensure the safety of pedestrians and other permitted users.

If you have any additional questions regarding German traffic rules, feel free to ask!