Polur in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Polur plotted against Tamil Nadu and India. The SNDi of new construction in Polur rose steadily, compared to Tamil Nadu which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Polur's incremental SNDi rose from 3.13 to 6.06 between 1991-2005 and 2006-2020. In terms of the aggregate network, Polur ranked 39th out of 121 cities in Tamil Nadu and 733rd out of 1868 in India as of 2020.

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

What about similarly populated cities?

• Shahpur, India
• Sabya, Saudi Arabia
• Grudziądz, Poland
• Thawe, India
• Qoryooley, Somalia
• 51 farm of 12th division, China

In new street additions, Polur built increasingly disconnected streets over time, while Shahpur fluctuated in its street-construction patterns and Thawe fluctuated in its street-construction patterns. For the full network, Polur became progressively more disconnected, while Shahpur fluctuated in connectivity and Thawe fluctuated in connectivity. Polur and Shahpur have been growing further apart in their street-network character since 1975.