Poster with slogan 'mind that door' in khaki text at top of page, with further text reading 'opening the carriage doors before the train stops causes accidents' in black and red.
The collage-style image features a black and white photograph of a man stepping out of an open carriage door, and a red figure on the platform who appears to be falling. The background is white. Printed by the British Transport Commission. Measures 101cm by 63cm.