Who may enter a street that has this sign?

The sign indicates a "Fahrradstraße," or cycle street, where the primary users are cyclists. The additional "Anlieger frei" sign means that only residents and people visiting residents are allowed to use the street, in addition to cyclists.

The correct combination of answers includes all cyclists (option 1) and all persons visiting residents (option 2). Moped riders do not have permission to use this route unless specified otherwise, which is why their inclusion is not necessary. This regulation helps ensure the road remains primarily safe and accessible for cyclists while allowing residents some access.