The BB 67514 crosses the Bièvre valley leading the 780953: Villeneuve - Le Mans.
Near Vauboyen Station in south of the regional express line C between Paris and Versailles-Chantiers
The Z 20909/10 with the new livery IDFM and Z 20529/30 arrive on Vauboyen, ensuring a mission Versailles Chantiers - Musée d'Orsay.
In place of a CC 72000, the BB 67559 is at the head of the Vitry - Gisors test train 469707.