The man in the street: a tale of two cities.
D000063:Accidents, Traffic / Q000517:prevention & control; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001334:Automobile Driving; D001938:Brazil; D002648:Child; D006801:Humans; D008396:Maryland; D008875:Middle Aged