Khash 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 Khash plotted against Sistan and Baluchestan and Iran. The SNDi of new construction in Khash 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, Khash's incremental SNDi rose from 2.0 to 3.07 between 1991-2005 and 2006-2020. In terms of the aggregate network, Khash ranked 1st out of 7 cities in Sistan and Baluchestan and 25th 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?

• Pavlohrad, Ukraine
• Chongwu, China
• Piprarhi, India
• Setúbal, Portugal
• Gangakhed, India
• Tosu, Japan

In new street additions, Khash built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Pavlohrad fluctuated in its street-construction patterns and Setúbal built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Khash became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Pavlohrad became progressively more disconnected and Setúbal grew more disconnected from 1975 through 1991-2005, then improved. Khash and Pavlohrad have been growing further apart in their street-network character since 1975.