The search for a sustainable urban form has created a major academic and political debate since the end of the 1980s [19], [20], [21], [22], [23]. In Europe, a major keystone was the "Green Paper on the Urban Environment" published by the European Commission in 1990 [24], which introduced the concept of the "compact city" as the archetypal sustainable urban form for European cities. Indeed Initial impressions evoke an intense medieval city, whose limits are clearly visible, and where the hubbub of daily activity is confined within the city's walls [25] (Figure. 1). It is the product of a certain form, scale, and mix of activities.