Jalali 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 Jalali plotted against Bushehr and Iran. The SNDi of new construction in Jalali followed a zig-zag trend with an overall increase, compared to Bushehr which followed a zig-zag trend with an overall increase and Iran which rose steadily. Most recently, Jalali's incremental SNDi rose from 3.06 to 3.57 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jalali ranked 4th out of 4 cities in Bushehr and 109th 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?

• Yuxia, China
• Biyahmu, Egypt
• Sujapur, India
• Chauhaddi, India
• Godagari, Bangladesh
• Souk Sebt Oulad Nemma, Morocco

In new street additions, Jalali fluctuated in its street-construction patterns, while Yuxia built increasingly disconnected streets from 1975 through 1976-1990, then improved and Chauhaddi built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Jalali fluctuated in connectivity, while Yuxia became progressively more disconnected and Chauhaddi became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Jalali and Yuxia have been converging in their street-network character since 1975.