Tiruvallur in context: Street-network sprawl trends
Tiruvallur in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tiruvallur plotted against Tamil Nadu and India. The SNDi of new construction in Tiruvallur was at its lowest in 1976-1990, compared to Tamil Nadu which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Tiruvallur's incremental SNDi rose from 3.31 to 3.61 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tiruvallur ranked 38th out of 121 cities in Tamil Nadu and 726th out of 1868 in India as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 3.61
- Rank in India
- 434th of 1868
- Rank in Tamil Nadu
- 13th of 121
Entire Network (Aggregate)
- SNDi value
- 3.44
- Rank in India
- 726th of 1868
- Rank in Tamil Nadu
- 38th of 121
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Tiruvallur built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Petrópolis built increasingly disconnected streets over time and Shendi fluctuated in its street-construction patterns. For the full network, Tiruvallur became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Petrópolis became progressively more disconnected and Shendi fluctuated in connectivity. Tiruvallur and Petrópolis have been growing further apart in their street-network character since 1975.