youths with lives of little promise, in contrast to the dead-end streets of the nearby. From an environmental perspective, culs-de-sac allow greater flexibility than the common grid in adapting to the natural grades of a site and to its ecologically sensitive features, such as streams creeks and mature forest growth. Principles of small house grouping. Both of these phenomena occur naturally on a cul-de-sac street as does social networking. 28 An extensive analysis of the research evidence by TRB, 29 however, shows only an association between the built environment and physical activity levels, not causal connections. Criticisms and discussion edit One of several short, narrow, connected cul-de-sac streets in Athens, Greece.
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Design guidelines based on the cpted perspective recommend its use for these reasons. It has been suggested that such rencontre cul sans inscription street layouts can cause increased traffic on the collector streets. "Urban nuclei and the geometry of streets: The 'emergent neighborhoods' model". "On Language: Dead End". In the United States and other countries, cul-de-sac is often not an exact synonym for dead end and refers to dead ends with a circular end, allowing for easy turning at the end of the road. In other countries, such incentives do not exist and its adoption is motivated by consumer preferences.