Pishva in context: Street-network sprawl trends
Pishva in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Pishva plotted against Tehran and Iran. The SNDi of new construction in Pishva was at its lowest in 1991-2005, compared to Tehran which rose steadily and Iran which rose steadily. Most recently, Pishva's incremental SNDi rose from 3.01 to 3.42 between 1991-2005 and 2006-2020. In terms of the aggregate network, Pishva ranked 1st out of 5 cities in Tehran and 105th out of 169 in Iran as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 3.42
- Rank in Iran
- 91st of 169
- Rank in Tehran
- 1st of 5
Entire Network (Aggregate)
- SNDi value
- 3.2
- Rank in Iran
- 105th of 169
- Rank in Tehran
- 1st of 5
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Pishva built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Xuanhua fluctuated in its street-construction patterns and Santa Fe built increasingly disconnected streets from 1975 through 1976-1990, then improved. Looking at the full network, Xuanhua and Santa Fe both became progressively more disconnected, while Pishva became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Pishva and Xuanhua have been converging in their street-network character since 1975.