It is a pure footway with "Fahrrad frei" (Sign 239 + 1022-10) between Am Moosfenn all the way until the rail crossing. 

https://imgur.com/a/DOqh91s

Before that, running between Saarmunder Straße and Am Moosfenn, it is designated as a combined footway/cycleway (sign 240).

The footway turns into a combined footway/cycleway (sign 240) directly at the rail crossing only to then immediately turn into a bi-directional separated cycleway and footway past Ladestraße (sign 241, both directions).