Palladam in context: Street-network sprawl trends

Palladam 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
PalladamTamil Nadu (Region)India (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Palladam plotted against Tamil Nadu and India. The SNDi of new construction in Palladam rose steadily, compared to Tamil Nadu which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Palladam's incremental SNDi rose from 3.62 to 4.38 between 1991-2005 and 2006-2020. In terms of the aggregate network, Palladam ranked 29th out of 121 cities in Tamil Nadu and 608th out of 1868 in India as of 2020.

New Street Additions (2006–2020)

SNDi value
4.38
Rank in India
750th of 1868
Rank in Tamil Nadu
41st of 121

Entire Network (Aggregate)

SNDi value
3.25
Rank in India
608th of 1868
Rank in Tamil Nadu
29th of 121

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

What about similarly populated cities?

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
PalladamTalcherWaterbury

In new street additions, Palladam built increasingly disconnected streets over time, while Talcher fluctuated in its street-construction patterns and Waterbury built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Palladam and Waterbury both became progressively more disconnected, while Talcher fluctuated in connectivity. Notably, Palladam had a more connected network than Waterbury in 1975 but the two have since reversed their relative ranking.