Poster encouraging road safety depicting a vehicle's wing mirror reflecting another car. The scene is set against a green background, and the mirror is seen as a disc, with the car reflected in it coloured red and half in shadow. At the top of the poster is the slogan in large black letters, ‘You are being followed’, and below the image, in red, ‘use’, and in black ‘your driving mirror’, at a slight diagonal angle. The artist has signed himself, 'Eckersley' at the lower right edge of the image.