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I have chosen the lack of pietonal sidewalks as a social challenge in an area located in the West of Bucharest, on Prelungirea Ghencea Boulevard, near Drumul Taberei neighborhood. 
I consider this to be a social challenge as much as it is an urbanistic problem. 
In my oppinion, the lack of sidewalks acts like a rupture between the residents living on the left and right side of the highway. Moreover, the intense traffic (circulation of cars) does not help create a feeling of safety and comfort for the residents.