Pernampattu in context: Street-network sprawl trends

Pernampattu in context

3.544.55<19751976–19901991–20052006–2020SNDi of street additions
3.544.55<19751976–19901991–20052006–2020SNDi of entire street network
PernampattuTamil Nadu (Region)India (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Pernampattu plotted against Tamil Nadu and India. While Tamil Nadu and India both followed a zig-zag trend with an overall increase, Pernampattu's new street additions followed a zig-zag trend with an overall increase. Most recently, Pernampattu's incremental SNDi rose from 3.25 to 3.88 between 1991-2005 and 2006-2020. In terms of the aggregate network, Pernampattu ranked 32nd out of 121 cities in Tamil Nadu and 660th out of 1868 in India as of 2020.

New Street Additions (2006–2020)

SNDi value
3.88
Rank in India
554th of 1868
Rank in Tamil Nadu
21st of 121

Entire Network (Aggregate)

SNDi value
3.35
Rank in India
660th of 1868
Rank in Tamil Nadu
32nd of 121

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
PernampattuLiyangShwebo

Pernampattu, Liyang, and Shwebo all fluctuated in its street-construction patterns in new street construction. Looking at the full network, Liyang and Shwebo both became progressively more disconnected, while Pernampattu fluctuated in connectivity. Pernampattu and Liyang have been converging in their street-network character since 1975.