Yanam 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 Yanam plotted against Puducherry and India. The SNDi of new construction in Yanam rose steadily, compared to Puducherry which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Yanam's incremental SNDi rose from 3.42 to 5.12 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yanam ranked 2nd out of 3 cities in Puducherry and 1024th 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?

• Sharqat, Iraq
• Chartres, France
• Suwa, Japan
• Ramtek, India
• Toliara, Madagascar
• Richard-Toll, Senegal

In new street additions, Yanam built increasingly disconnected streets over time, while Sharqat built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Ramtek fluctuated in its street-construction patterns. For the full network, Yanam and Ramtek both became progressively more disconnected, while Sharqat became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Yanam and Sharqat have been growing further apart in their street-network character since 1975.