Comparisons
Alborz vs. the other two most closely populated regions in Iran: Khuzestan and Fars
Alborz in context: Street-network sprawl of new development
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.
How do development practices in Alborz fare in comparison to others in Iran? Most recently in 2006-2020, street construction in Alborz was the 29th-most disconnected out of the 31 regions in Iran. Its position in the ranks since 1975 has risen; relative to other regions in Iran, street construction in Alborz has become more disconnected. Alborz ranked 30th in 1975, 29th in 1976-1990, 28th in 1991-2005 and 29th in 2006-2020.
Alborz in context: Aggregate street-network sprawl
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.
To date, Alborz is the 29th-most disconnected out of the 31 regions in Iran. Its position in the ranks since 1975 has risen; relative to other regions in Iran, the street network in Alborz has become more disconnected. Alborz ranked 30th in 1975, 30th in 1976-1990, 29th in 1991-2005 and 29th in 2006-2020.