Who may enter a street that has this sign?

This traffic sign combination indicates a "Fahrradstraße" (bicycle street) with an additional sign "Anlieger frei" meaning "residents and people with legitimate business allowed."

A Fahrradstraße primarily allows bicycles to use the street, giving them priority and a safer environment. Motor vehicles are generally not allowed, except for those who have legitimate reasons to enter, such as residents, delivery services, or visitors to residents. Hence, cyclists always have access, and the "Anlieger frei" allows non-cyclists who have business or live there to enter.

Moped riders, however, are generally not allowed unless explicitly permitted, because the sign prioritizes bicycles. So in this case, only all cyclists and persons visiting residents (anlieger) may enter.

This rule ensures that bicycle traffic is safe and prioritized while allowing necessary local motor traffic, avoiding through traffic.