The image shows a window of a train with a sign that reads "Please keep your distance". The window is located in a subway station with a red and white color scheme. The sign is circular in shape and has a blue background with white text. Inside the window, there is a blue and white sign with the words "North Greenwich" and "Please Keep Your Distance" written in white. There is also a yellow caution sign on the left side of the window. The window appears to be closed, as there are no passengers visible in the image.