Il y a bien un panneau C115 (voie verte sur cette section :
https://www.openstreetmap.org/way/288962333
https://www.openstreetmap.org/way/227042181
https://www.openstreetmap.org/way/196482654
https://www.openstreetmap.org/way/802108037
https://www.openstreetmap.org/way/802108039
https://www.openstreetmap.org/way/219298054
https://www.openstreetmap.org/way/385434004