Tiruchengodu 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 Tiruchengodu plotted against Tamil Nadu and India. The SNDi of new construction in Tiruchengodu rose steadily, compared to Tamil Nadu which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Tiruchengodu's incremental SNDi rose from 4.01 to 4.23 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tiruchengodu ranked 56th out of 121 cities in Tamil Nadu and 917th 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?

• 北塘, China
• Rio Verde, Brazil
• Inaruwa, Nepal
• Kurume, Japan
• Arnhem, Netherlands
• Pyay, Myanmar

In new street additions, Tiruchengodu built increasingly disconnected streets over time, while 北塘 built increasingly disconnected streets from 1975 through 1976-1990, then improved and Kurume fluctuated in its street-construction patterns. For the full network, Tiruchengodu and Kurume both became progressively more disconnected, while 北塘 grew more disconnected from 1975 through 1976-1990, then improved. Tiruchengodu and 北塘 have been converging in their street-network character since 1975.