Dumraon 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 Dumraon plotted against Bihar and India. The SNDi of new construction in Dumraon peaked 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, Dumraon's incremental SNDi fell from 5.56 to 2.15 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dumraon ranked 17th out of 264 cities in Bihar and 245th 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?

• Barki Saria, India
• Unaí, Brazil
• Chaisang, China
• Barranca, Peru
• Bouar, Central African Republic
• Koupéla, Burkina Faso

In new street additions, Dumraon built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Barki Saria fluctuated in its street-construction patterns and Barranca fluctuated in its street-construction patterns. For the full network, Dumraon grew more disconnected from 1975 through 1991-2005, then improved, while Barki Saria became progressively more disconnected and Barranca fluctuated in connectivity. Notably, Dumraon had a more connected network than Barranca in 1975 but the two have since reversed their relative ranking.