From around 1930, the automobile and airplane began to be celebrated as symbols of progress, and the widespread fascination with technology and the cult of speed found new expression in the poster. With his prevention posters from the early fifties, Josef Müller-Brockmann (1914–1996) drew the public’s attention instead to the dangerous side of the new modes of transport. In collaboration with Ernst A. Heiniger (1909–1993), and later with Serge Libiszewski (b. 1930), for the first time he used photography as his medium of choice. A dramatic look achieved through blow-up effects did not fail to have the desired impact.