In recent years projects involving the concept of “child-friendly cities” have attracted attention in Sweden. While research into this area has taken place in other countries (cf. Bartlett et al. 1999; Chawla, 2002; Horelli, 2003), no such research exists in Sweden. Several international studies have shown that children a few generations ago generally had much greater freedom to explore their neighbourhood than children have today. In the past children played alone outdoors more often and also played in the street (Engwicht, 1992; Van der Spek & Noyon, 1995). Parents today watch over their children more and do so until the children are older (Gaster, 1991). In the Netherlands a changing pattern has been observed, children today spending more time indoors than was previously the case (Karsten, 2002). In parental questionnaire studies in Stockholm’s inner city and suburbs (Björklid, 2002) one in three parents felt that they themselves had greater opportunities as children for visiting places and friends. A similar proportion also felt it was safer in the past with regard to both traffic and other dangers (cf also Prezza et al. 2001; Risotto & Tonucci 2002). The aim of this study is to describe 12-year-old children's use of their neighbourhood and to analyse how this is influenced by the traffic environment and other physical and social factors. Children's and parents' experiences of children’s outdoor environment has been studied as well as how these experiences might influence children's use of space and independent mobility. Parents completed a questionnaire and children described the places they visit. This was accomplished by means of written reports, the children’s own photographs, group interviews and walking tours. The project consists of several part-studies. The present study focuses on children’s access to, use of and relationship with their local environment. The results will describe variations between children’s experience and use of their local environment in a traffic-segregated suburb built during the late 1960s. Parents’ and teachers’ evaluation and use of the local environment will also be presented.