Chabahar in context: Street-network sprawl trends

Chabahar in context

2.733.33.6<19751976–19901991–20052006–2020SNDi of street additions
2.733.33.6<19751976–19901991–20052006–2020SNDi of entire street network
ChabaharSistan and Baluchestan (Region)Iran (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Chabahar plotted against Sistan and Baluchestan and Iran. The SNDi of new construction in Chabahar 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, Chabahar's incremental SNDi rose from 2.64 to 2.66 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chabahar ranked 5th out of 7 cities in Sistan and Baluchestan and 78th out of 169 in Iran as of 2020.

New Street Additions (2006–2020)

SNDi value
2.66
Rank in Iran
37th of 169
Rank in Sistan and Baluchestan
1st of 7

Entire Network (Aggregate)

SNDi value
2.88
Rank in Iran
78th of 169
Rank in Sistan and Baluchestan
5th of 7

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

What about similarly populated cities?

2.12.42.733.3<19751976–19901991–20052006–2020SNDi of street additions
2.12.42.733.3<19751976–19901991–20052006–2020SNDi of entire street network
ChabaharSherpurBurlington

In new street additions, Chabahar built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Sherpur fluctuated in its street-construction patterns and Burlington fluctuated in its street-construction patterns. For the full network, Chabahar became progressively more connected, while Sherpur fluctuated in connectivity and Burlington fluctuated in connectivity. Notably, Chabahar had a more connected network than Sherpur in 1975 but the two have since reversed their relative ranking.