Ulundurpettai in context: Street-network sprawl trends

Ulundurpettai in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
UlundurpettaiTamil Nadu (Region)India (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ulundurpettai plotted against Tamil Nadu and India. The SNDi of new construction in Ulundurpettai rose steadily, compared to Tamil Nadu which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Ulundurpettai's incremental SNDi rose from 3.36 to 4.3 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ulundurpettai ranked 31st out of 121 cities in Tamil Nadu and 630th out of 1868 in India as of 2020.

New Street Additions (2006–2020)

SNDi value
4.3
Rank in India
709th of 1868
Rank in Tamil Nadu
35th of 121

Entire Network (Aggregate)

SNDi value
3.29
Rank in India
630th of 1868
Rank in Tamil Nadu
31st of 121

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

What about similarly populated cities?

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
UlundurpettaiPamanukanSardasht

In new street additions, Pamanukan and Sardasht both fluctuated in street-construction patterns, while Ulundurpettai built increasingly disconnected streets over time. For the full network, Ulundurpettai and Pamanukan both became progressively more disconnected, while Sardasht became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Ulundurpettai and Pamanukan have been converging in their street-network character since 1975.