When are you allowed to park your two-wheeler on the footpath?

You selected that you are allowed to park your two-wheeler on the footpath when a traffic sign indicates this is permitted. This is correct. In Germany, parking a motorcycle, scooter, or bicycle on the sidewalk is generally not allowed unless there is a specific traffic sign that permits it. The width of the footpath or the lack of other parking options does not make it legal unless the sign is present. Always look for a sign that explicitly allows parking for two-wheelers on the sidewalk before doing so.