There aren't any oneway signs on Mapillary, but we have a no_entry sign on the end of Röckumstraße road. So, I have checked all roads and find restrictions that not allowed to drive in the opposite direction of the so-called "oneway" road.
So, the only thing we don't know is whether there really is a oneway.
But for now all restrictions work correctly and prohibited to drive in the opposite direction anyway.