Saqqez 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 Saqqez plotted against Kordestan and Iran. The SNDi of new construction in Saqqez was at its lowest in 1976-1990, compared to Kordestan which rose steadily and Iran which rose steadily. Most recently, Saqqez's incremental SNDi rose from 2.18 to 2.47 between 1991-2005 and 2006-2020. In terms of the aggregate network, Saqqez ranked 1st out of 4 cities in Kordestan and 11th 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?

• Cà Mau, Vietnam
• Kalar, Iraq
• Nan'an, China
• Ain Beida, Algeria
• Turgutlu, Turkey
• 천리마구역, North Korea

In new street additions, Saqqez built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Cà Mau built increasingly disconnected streets from 1975 through 1991-2005, then improved and Ain Beida fluctuated in its street-construction patterns. Looking at the full network, Cà Mau and Ain Beida both became progressively more disconnected, while Saqqez became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Saqqez and Cà Mau have been growing further apart in their street-network character since 1975.