What vehicles may enter a zone with this sign?

The sign shown indicates a zone designated for bicycles, with the additional sign "Anlieger frei" meaning "Residents allowed." This implies that only bicycles are permitted to enter this zone, alongside vehicles that are driven by residents of the area.

According to German traffic regulations, zones marked for bicycles are intended to enhance safety for cyclists and promote environmentally friendly transportation. The permission for residents to drive into these areas is important to facilitate access for local traffic while maintaining the restriction for outside vehicles, ensuring that the zone remains safe and accessible for cyclists.

Understanding these rules helps in complying with traffic regulations and ensures safer environments for all road users.