Iranshahr in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Iranshahr plotted against Sistan and Baluchestan and Iran. The SNDi of new construction in Iranshahr peaked in 1991-2005, compared to Sistan and Baluchestan which was at its lowest in 1991-2005 and Iran which rose steadily. Most recently, Iranshahr's incremental SNDi fell from 3.85 to 3.23 between 1991-2005 and 2006-2020. In terms of the aggregate network, Iranshahr ranked 6th out of 7 cities in Sistan and Baluchestan and 107th out of 169 in Iran as of 2020.

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

What about similarly populated cities?

• Aliganj, India
• Ishinomaki, Japan
• Bhatapara, India
• Haurgeulis, Indonesia
• Dogondoutchi, Niger
• Ban Phaeo, Thailand

In new street additions, Iranshahr built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Aliganj fluctuated in its street-construction patterns and Haurgeulis built increasingly disconnected streets over time. For the full network, Iranshahr grew more disconnected from 1975 through 1991-2005, then improved, while Aliganj fluctuated in connectivity and Haurgeulis became progressively more disconnected. Iranshahr and Haurgeulis have been converging in their street-network character since 1975.