Who is allowed to enter a street sign-posted like this?

The main sign here is a "No entry for all vehicles" sign, which normally prohibits all motor vehicles from entering. However, the supplementary sign "Anlieger frei" means "Residents (and those with a legitimate interest) allowed."

According to German traffic rules, this means only residents and people visiting residents (such as guests, delivery drivers, or service providers) are allowed to enter. Through-traffic, meaning drivers who are just passing through without a specific reason to enter, is not permitted.

This ensures that the street is kept free from unnecessary traffic, reducing congestion and improving safety for residents. So, if you are not a resident or do not have a legitimate reason related to a resident (like a visitor or delivery), you must not enter the street with this sign combination.