Amdabad 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 Amdabad plotted against Bihar and India. The SNDi of new construction in Amdabad rose steadily, 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, Amdabad's incremental SNDi rose from 5.14 to 8.8 between 1991-2005 and 2006-2020. In terms of the aggregate network, Amdabad ranked 198th out of 264 cities in Bihar and 1572nd 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?

• Songshan, China
• Businga, Democratic Republic of the Congo
• Haiyou, China
• Suiyang, China
• Phú Liên, Vietnam
• Qinggang, China

In new street additions, Amdabad built increasingly disconnected streets over time, while Songshan fluctuated in its street-construction patterns and Suiyang built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Amdabad and Songshan both became progressively more disconnected, while Suiyang became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards.