Vaniyambadi 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 Vaniyambadi plotted against Tamil Nadu and India. The SNDi of new construction in Vaniyambadi peaked in 1976-1990, compared to Tamil Nadu which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Vaniyambadi's incremental SNDi fell from 4.18 to 4.0 between 1991-2005 and 2006-2020. In terms of the aggregate network, Vaniyambadi ranked 90th out of 121 cities in Tamil Nadu and 1177th 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?

• Arraiján, Panama
• Nancy, France
• Hulunbuir, China
• Gaoping, China
• Anda, China
• Lalganj, India

In new street additions, Vaniyambadi built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Arraiján built increasingly disconnected streets over time and Gaoping built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Vaniyambadi grew more disconnected from 1975 through 1976-1990, then improved, while Arraiján became progressively more disconnected and Gaoping grew more disconnected from 1975 through 1991-2005, then improved. Vaniyambadi and Arraiján have been growing further apart in their street-network character since 1975.