Anchal 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 Anchal plotted against Kerala and India. The SNDi of new construction in Anchal was at its lowest in 1976-1990, compared to Kerala which was at its lowest in 1976-1990 and India which followed a zig-zag trend with an overall increase. Most recently, Anchal's incremental SNDi rose from 4.37 to 5.24 between 1991-2005 and 2006-2020. In terms of the aggregate network, Anchal ranked 8th out of 48 cities in Kerala and 1082nd 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?

• Zhongyang, China
• شبراويش, Egypt
• Pach Pakri, India
• Avellino, Italy
• Thuraiyur, India
• Rudbar, Iran

In new street additions, Anchal built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Zhongyang fluctuated in its street-construction patterns and Avellino built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Anchal became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Zhongyang fluctuated in connectivity and Avellino became progressively more disconnected. Anchal and Zhongyang have been converging in their street-network character since 1975.