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A member of the group Traffic Psychologists fixes his clown nose in a toilet of a petrol station in preparation for his performance at a traffic light in Sao Paulo July 23, 2012. Traffic Psychologists is a non-profit non-governmental organization which aims to humanize traffic and reduce the level of stress caused to drivers. Sao Paulo has more than 7 million vehicles, according to figures from the state transport authority Detran. REUTERS/Nacho Doce






