The sign "Other vehicle-person groups free" (sign number 1028-31) indicates that a specific restriction on road use does not apply to certain groups of vehicles and pedestrians. Usually, this sign is used in conjunction with other signs that restrict access, such as no entry signs or access restrictions for certain vehicles.

In this case, the sign allows pedestrians, cyclists, and possibly other vehicles like emergency responders or service vehicles to go through an area where normally access might be restricted. This often aims to enhance safety for those groups while still managing road traffic.

If you have any more questions or need further clarification, feel free to ask!