Suran in context: Street-network sprawl trends

Suran in context

22.533.5<19751976–19901991–20052006–2020SNDi of street additions
22.533.5<19751976–19901991–20052006–2020SNDi of entire street network
SuranSistan and Baluchestan (Region)Iran (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Suran plotted against Sistan and Baluchestan and Iran. The SNDi of new construction in Suran was at its lowest in 1991-2005, compared to Sistan and Baluchestan which was at its lowest in 1991-2005 and Iran which rose steadily. Most recently, Suran's incremental SNDi rose from 2.17 to 2.69 between 1991-2005 and 2006-2020. In terms of the aggregate network, Suran ranked 2nd out of 7 cities in Sistan and Baluchestan and 33rd out of 169 in Iran as of 2020.

New Street Additions (2006–2020)

SNDi value
2.69
Rank in Iran
40th of 169
Rank in Sistan and Baluchestan
2nd of 7

Entire Network (Aggregate)

SNDi value
2.41
Rank in Iran
33rd of 169
Rank in Sistan and Baluchestan
2nd of 7

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

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
SuranAbu RoadSay'un

In new street additions, Suran built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Abu Road built increasingly disconnected streets over time and Say'un fluctuated in its street-construction patterns. For the full network, Suran became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Abu Road became progressively more disconnected and Say'un became progressively more disconnected. Suran and Abu Road have been growing further apart in their street-network character since 1975.