Practice, but where?

Moin moin, for this season I have planned to practice and not only to tear KM. I count to this e.g. slalom, dodge, brake and so much more Now the question is where?! On public roads, even if unpropelled I do not know if it is allowed or if it might feel disturbed…. With the driving school we have either been in the industrial area, where always the driving instructor more or less “secures”… If I do not drive alone. Also we are on a federal woe There, however, only driving schools are allowed, for vehicles of any kind the passage is forbidden…https://www.google.de/maps/@53.04779.8613562.80m/data=!3m1!1e3 What do you think of this “road”, this is provided that g-Maps is currently locked off only from the airfield itself. Of course, one would have to ask if it is allowed… Where else can you ask? Do you have ideas, where did you practice earlier?