The level of street-network sprawl in new development in Alborz was at its lowest in 1976-1990. To get a sense of how street development has changed in Alborz, we can consider three of its most populous cities: Karaj, Safadasht and Mohammad Shahr. Out of the three cities, Safadasht and Mohammad Shahr do not follow the same trend as the region. The level of street-network sprawl in new development in Safadasht fell steadily. The level of street-network sprawl in new development in Mohammad Shahr rose steadily.

As of 2020, the city with the most disconnected street network in Alborz is Mohammad Shahr with an SNDi of 4.27, which is sprawly. Conversely, the most connected city is Nazarabad with an SNDi of 2.24, which is well-connected. See trends for these cities: Nazarabad, Mohammad Shahr

The level of street-network sprawl in the aggregate network in Alborz was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Alborz, we can consider three of its most populous cities: Karaj, Safadasht and Mohammad Shahr. Out of the three cities, Safadasht and Mohammad Shahr do not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Safadasht fell steadily. The level of street-network sprawl in the aggregate network in Mohammad Shahr rose steadily.