District 8 in context: Street-network sprawl trends

District 8 in context

3.244.85.6<19751976–19901991–20052006–2020SNDi of street additions
3.244.85.6<19751976–19901991–20052006–2020SNDi of entire street network
District 8Qom (Region)Iran (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with District 8 plotted against Qom and Iran. The SNDi of new construction in District 8 peaked in 1991-2005, compared to Qom which was at its lowest in 1976-1990 and Iran which rose steadily. Most recently, District 8's incremental SNDi fell from 5.39 to 4.76 between 1991-2005 and 2006-2020. In terms of the aggregate network, District 8 ranked 2nd out of 2 cities in Qom and 159th out of 169 in Iran as of 2020.

New Street Additions (2006–2020)

SNDi value
4.76
Rank in Iran
150th of 169
Rank in Qom
2nd of 2

Entire Network (Aggregate)

SNDi value
4.9
Rank in Iran
159th of 169
Rank in Qom
2nd of 2

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
District 8ChelmMurgia Chak

In new street additions, District 8 and Chełm both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Murgia Chak fluctuated in its street-construction patterns. For the full network, District 8 grew more disconnected from 1975 through 1991-2005, then improved, while Chełm became progressively more disconnected and Murgia Chak fluctuated in connectivity. District 8 and Murgia Chak have been converging in their street-network character since 1975.