Bandar-e Torkaman in context: Street-network sprawl trends

Bandar-e Torkaman in context

33.544.5<19751976–19901991–20052006–2020SNDi of street additions
33.544.5<19751976–19901991–20052006–2020SNDi of entire street network
Bandar-e TorkamanGolestan (Region)Iran (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bandar-e Torkaman plotted against Golestan and Iran. The SNDi of new construction in Bandar-e Torkaman was at its lowest in 1976-1990, compared to Golestan which rose steadily and Iran which rose steadily. Most recently, Bandar-e Torkaman's incremental SNDi rose from 3.31 to 3.52 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bandar-e Torkaman ranked 2nd out of 4 cities in Golestan and 114th out of 169 in Iran as of 2020.

New Street Additions (2006–2020)

SNDi value
3.52
Rank in Iran
101st of 169
Rank in Golestan
1st of 4

Entire Network (Aggregate)

SNDi value
3.31
Rank in Iran
114th of 169
Rank in Golestan
2nd of 4

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
Bandar-e TorkamanBartinNingjin

In new street additions, Bandar-e Torkaman built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Bartın built increasingly disconnected streets over time and Ningjin built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Bandar-e Torkaman became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Bartın became progressively more disconnected and Ningjin became progressively more connected. Bandar-e Torkaman and Bartın have been growing further apart in their street-network character since 1975.