The level of street-network sprawl in new development in Tehran rose steadily. To get a sense of how street development has changed in Tehran, we can consider three of its most populous cities: Tehran, Pishva and Qarchak. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Tehran followed a zig-zag trend with an overall increase. The level of street-network sprawl in new development in Pishva was at its lowest in 1991-2005. The level of street-network sprawl in new development in Qarchak followed a zig-zag trend with an overall increase.

As of 2020, the city with the most disconnected street network in Tehran is Pardis with an SNDi of 5.28, which is very sprawly. Conversely, the most connected city is Pishva with an SNDi of 3.2, which is moderately connected. See trends for these cities: Pishva, Pardis

The level of street-network sprawl in the aggregate network in Tehran was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Tehran, we can consider three of its most populous cities: Tehran, Pishva and Qarchak. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Tehran followed a zig-zag trend with an overall increase. The level of street-network sprawl in the aggregate network in Pishva was at its lowest in 1991-2005. The level of street-network sprawl in the aggregate network in Qarchak rose steadily.