But this is a rare feature of Germany and can certainly be mapped.
remember: designated does not mean mandatory
- Use of bicycle=designated vs bicycle=yes OUTSIDE of Germany
- Radverkehrsanlagen kartieren: Wann setzt man bicycle=designated? - Deutschland (Germany) - OpenStreetMap Community Forum
not a oneway case:
bicycle:forward=designated (because of DE:240)
bicycle:backward=yes (because of DE:239,1022-10)
you may better (additionally) tag
bicycle=designated
maxspeed:bicycle:backward=walk
in case:
bicycle:forward=designated
bicycle:backward=no
you may better tag
bicycle=designated
oneway:bicycle=yes