Pardis in context: Street-network sprawl trends
Pardis in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Pardis plotted against Tehran and Iran. The SNDi of new construction in Pardis was at its lowest in 1991-2005, compared to Tehran which rose steadily and Iran which rose steadily. Most recently, Pardis's incremental SNDi rose from 4.82 to 5.8 between 1991-2005 and 2006-2020. In terms of the aggregate network, Pardis ranked 5th out of 5 cities in Tehran and 163rd out of 169 in Iran as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 5.8
- Rank in Iran
- 160th of 169
- Rank in Tehran
- 5th of 5
Entire Network (Aggregate)
- SNDi value
- 5.28
- Rank in Iran
- 163rd of 169
- Rank in Tehran
- 5th 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, Pardis built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Chongzhou fluctuated in its street-construction patterns and As Sayyid built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Pardis became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Chongzhou became progressively more disconnected and As Sayyid grew more disconnected from 1975 through 1976-1990, then improved.