A closed train door from an RER B line train is observed, stationary at a platform in Orsay, France

A closed train door from an RER B line train is observed, stationary at a platform in Orsay, France. The train's exterior displays horizontal bands of dark grey, light grey, and white. The double-leaf door itself comprises a left leaf featuring a red-to-magenta vertical color gradient and a right leaf in solid teal, with corresponding magenta and teal blocks positioned above the doors on the upper train body. Each door leaf incorporates a rectangular window with rounded corners. Through the left window, an indistinct human silhouette and a yellow fabric object are visible within the train's interior. The right window reveals another indistinct human silhouette inside, alongside a distinct reflection of a light-colored brick building facade, which includes a window fitted with horizontal venetian blinds. A dark rectangular object and a partial reflection of a human hand are also present on the right window's surface. The left door features a red handle or emergency release mechanism, while the right door has a teal handle. White rectangular informational stickers are affixed to the lower section of both windows. On the lower left exterior of the train, a white pictogram depicting an adult holding a child's hand is visible above a yellow square containing two red downward-pointing arrows. A similar yellow warning square with red arrows is visible on the far right side of the image. A lowered step is extended beneath the doors, indicating the train is currently stopped at a platform.