Urban planning in post-independence Kinshasa has not been extensive. The ''Mission Française d'Urbanisme'' drew up some plans in the 1960s which envisioned a greater role for automobile transportation but did not predict the city's significant population growth. Thus much of the urban structure has developed without guidance from a master plan. According to UN-Habitat, the city is expanding by eight square kilometers per year. It describes many of the new neighborhoods as slums, built in unsafe conditions with inadequate infrastructure. Nevertheless, spontaneously developed areas have in many cases extended the grid street plan of the original city.