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

The sign indicates a cycle highway, designated for bicycles and allowing access only to specific vehicles. The lower sign, "Anlieger frei," means "residents allowed," which indicates that only vehicles driven by residents of that area are permitted to enter the cycle highway.

In this context, other vehicles, such as cars or mopeds, are generally not allowed unless they meet specific criteria. For example, mopeds below a certain speed limit may be permitted, but not generally cars at any speed. Understanding these distinctions is crucial for compliance with German traffic laws, ensuring safety for cyclists and proper use of cycling infrastructure.