Pakdasht 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 Pakdasht plotted against Tehran and Iran. The SNDi of new construction in Pakdasht followed a zig-zag trend with an overall increase, compared to Tehran which rose steadily and Iran which rose steadily. Most recently, Pakdasht's incremental SNDi rose from 3.72 to 4.05 between 1991-2005 and 2006-2020. In terms of the aggregate network, Pakdasht ranked 4th out of 5 cities in Tehran and 144th 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?

• Kenge, Democratic Republic of the Congo
• Chucko, Ethiopia
• Saveh, Iran
• Pakokku, Myanmar
• Chikhli, India
• Basha, Ethiopia

While Kenge and Pakokku both built increasingly disconnected streets over time, Pakdasht fluctuated in its street-construction patterns in new street additions. Looking at the full network, Kenge and Pakokku both became progressively more disconnected, while Pakdasht became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Pakdasht and Kenge have been converging in their street-network character since 1975.