Diu 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 Diu plotted against Daman and Diu and India. The SNDi of new construction in Diu was at its lowest in 1976-1990, compared to Daman and Diu which followed a zig-zag trend with an overall increase and India which followed a zig-zag trend with an overall increase. Most recently, Diu's incremental SNDi rose from 2.56 to 3.51 between 1991-2005 and 2006-2020. In terms of the aggregate network, Diu ranked 1st out of 2 cities in Daman and Diu and 351st 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?

• Paulo Afonso, Brazil
• Freiburg im Üechtland, Switzerland
• Bamban, Philippines
• Guamúchil, México
• Umreth, India
• Bangor, United Kingdom

In new street additions, Diu built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Paulo Afonso fluctuated in its street-construction patterns and Guamúchil built increasingly disconnected streets over time. Looking at the full network, Paulo Afonso and Guamúchil both became progressively more disconnected, while Diu became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Diu had a more sprawly network than Paulo Afonso in 1975 but the two have since reversed their relative ranking.