After the Second World War, the bicycle was surpassed by the car as the dominant mode of individual transportation in most Western countries. Since the 1970s, however, bicycle use has again gained some support both from the general public and from governments. In the last two decades national governments and cities throughout the Western world, from Norway to Australia and the United States to Germany, as well as the European Union, have launched policy statements and programs aimed at promoting cycling. Policy documents show much optimism about the possibilities to increase the bike’s modal share in transport by means of infrastructural and social engineering. These policy plans have enhanced social scientific and traffic engineering research into bicycle use and its facilitation.