What vehicles may enter a cycle highway that has this sign?

The sign indicates a "Fahrradstraße," or cycle highway, where cyclists have priority. The additional sign "Anlieger frei" means that only residents or authorized vehicles may enter this street.

In general, this allows residents’ vehicles and certain low-speed vehicles, like mopeds under 25 km/h, to use the cycle highway. However, all other vehicles, including cars, are prohibited unless expressly allowed for specific reasons (i.e., delivery for residents).

This regulation aims to enhance safety for cyclists while minimizing traffic interference from non-residential vehicles. Understanding this helps ensure adherence to local traffic laws, promoting safer roads for everyone.