Why the term ’Critical Mass’ ? Critical mass is a sociodynamic term to describe the existence of sufficient momentum in a social system such that the momentum becomes self-sustaining and fuels further growth. (Wiki) It seems that the term ’critical mass’ was applied to the cyclist movement (...)

In France, the very first « bicycle demonstrations » were set up by the French agency of Friends of the Earth (see http://www.amisdelaterre.org). It was in the early 70s. In Gébé and Doillon’s 1972 film, l’AN 01 (Year 01), thousands of cyclists can be seen in that kind of demonstrations, shouting (...)

«22 September (ex-carfree day in France, 2009)» ************************** «Ciemmona 2008 (Roma critical mass)» ************************ «Criticona 2009 (Madrid critical mass)» ************************* «Budapest Carfree day (...)