Silvassa 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 Silvassa plotted against Dadra and Nagar Haveli and India. The SNDi of new construction in Silvassa was at its lowest in 1991-2005, compared to Dadra and Nagar Haveli which was at its lowest in 1991-2005 and India which followed a zig-zag trend with an overall increase. Most recently, Silvassa's incremental SNDi rose from 4.78 to 5.82 between 1991-2005 and 2006-2020. In terms of the aggregate network, Silvassa ranked 2nd out of 2 cities in Dadra and Nagar Haveli and 1541st 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?

• Balrampur, India
• Uruapan, México
• Golapganj, Bangladesh
• Guigang, China
• Mahishadal, India
• Yongzhou, China

In new street additions, Silvassa built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Balrampur built increasingly disconnected streets from 1975 through 1991-2005, then improved and Guigang built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Silvassa and Guigang both became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Balrampur became progressively more disconnected. Silvassa and Balrampur have been converging in their street-network character since 1975.