What ends here?

This sign marks the end of a no-waiting zone (Parken verboten Zone). In German traffic rules, a no-waiting zone means that you are not allowed to stop your vehicle to wait or park, but you may stop briefly to pick up or drop off passengers or goods. Once you see this sign, the prohibition to wait ends, and you are allowed to wait or park again, unless other signs say otherwise.

It does not end a no-stopping zone (which is a stricter rule) nor does it cancel all previous road zone prohibitions. This sign only relates to the no-waiting restriction that was previously in effect in that zone.