Parbalpur 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 Parbalpur plotted against Bihar and India. The SNDi of new construction in Parbalpur was at its lowest in 1991-2005, compared to Bihar which followed a zig-zag trend with an overall increase and India which followed a zig-zag trend with an overall increase. Most recently, Parbalpur's incremental SNDi rose from 4.0 to 6.2 between 1991-2005 and 2006-2020. In terms of the aggregate network, Parbalpur ranked 220th out of 264 cities in Bihar and 1649th 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?

• Cai Lậy, Vietnam
• Jagdispur, India
• Lawdar, Yemen
• Chunarughat, Bangladesh
• Jinping, China
• Saakow, Somalia

In new street additions, Parbalpur built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Cai Lậy built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Chunarughat built increasingly disconnected streets over time. For the full network, Parbalpur became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Cai Lậy became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards and Chunarughat became progressively more disconnected. Notably, Parbalpur had a more sprawly network than Chunarughat in 1975 but the two have since reversed their relative ranking.