Qarchak in context: Street-network sprawl trends
Qarchak in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Qarchak plotted against Tehran and Iran. The SNDi of new construction in Qarchak followed a zig-zag trend with an overall increase, compared to Tehran which rose steadily and Iran which rose steadily. Most recently, Qarchak's incremental SNDi rose from 3.85 to 4.22 between 1991-2005 and 2006-2020. In terms of the aggregate network, Qarchak ranked 3rd out of 5 cities in Tehran and 142nd out of 169 in Iran as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 4.22
- Rank in Iran
- 139th of 169
- Rank in Tehran
- 4th of 5
Entire Network (Aggregate)
- SNDi value
- 3.9
- Rank in Iran
- 142nd of 169
- Rank in Tehran
- 3rd of 5
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
- Dahod, India
- Windhoek, Namibia
- Francisco Morato, Brazil
- Jiyuan, China
- Bauru, Brazil
- Wad Madanī, Sudan
In new street additions, Qarchak fluctuated in its street-construction patterns, while Dahod built increasingly disconnected streets over time and Jiyuan built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend. Qarchak and Dahod have been converging in their street-network character since 1975.