The cycle path / cycle road only forms the relatively short section (between Hardenbeck and just behind the Hardenbeck Haussee) of the route shown here. Most of the route is a ramshackle country road that is only driven at 70 km / h, sometimes with many trucks, which, due to the slowly breaking hard shoulder, also like to drive in the middle of the lane and sometimes come very close / too close to you.
If you want to drive more safely, you have to drive from Lychen to Alt-Placht and from there via Gandenitz, Metzelthin and Warte. However, this represents a detour of about 10 kilometers.