Gummidipundi 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 Gummidipundi plotted against Tamil Nadu and India. The SNDi of new construction in Gummidipundi peaked in 1991-2005, compared to Tamil Nadu which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Gummidipundi's incremental SNDi fell from 6.17 to 5.89 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gummidipundi ranked 116th out of 121 cities in Tamil Nadu and 1709th 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?

• Kalmunai, Sri Lanka
• Al-Gharaq, Egypt
• Tiancheng, China
• Jerash, Jordan
• Xincai, China
• Langwarrin, Australia

In new street additions, Gummidipundi and Kalmunai both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Jerash fluctuated in its street-construction patterns. For the full network, Gummidipundi grew more disconnected from 1975 through 1991-2005, then improved, while Kalmunai became progressively more disconnected and Jerash fluctuated in connectivity. Gummidipundi and Jerash have been growing further apart in their street-network character since 1975.