Thalaiyuthu 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 Thalaiyuthu plotted against Tamil Nadu and India. The SNDi of new construction in Thalaiyuthu followed a zig-zag trend with an overall increase, compared to Tamil Nadu which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Thalaiyuthu's incremental SNDi fell from 5.11 to 4.29 between 1991-2005 and 2006-2020. In terms of the aggregate network, Thalaiyuthu ranked 88th out of 121 cities in Tamil Nadu and 1145th 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?

• Stary Oskol, Russia
• Camberley, United Kingdom
• Grozny, Russia
• Abu Road, India
• Suran, Iran
• Say'un, Yemen

In new street additions, Thalaiyuthu fluctuated in its street-construction patterns, while Stary Oskol built increasingly disconnected streets from 1975 through 1976-1990, then improved and Abu Road built increasingly disconnected streets over time. For the full network, Thalaiyuthu became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Stary Oskol grew more disconnected from 1975 through 1976-1990, then improved and Abu Road became progressively more disconnected. Thalaiyuthu and Abu Road have been converging in their street-network character since 1975.