https://www.mapillary.com/app/?pKey=980223193713045 it's writen "réservé aux cavaliers" so  24395429 is well a bridleway 

I think there's a signage contradiction because here https://www.mapillary.com/app/?pKey=1652895565073907 there is no signs to prohibit horseman going to Avenue de Diane. 

Will try to go there next week to verify if there is additional signs or not. 