Lumding 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 Lumding plotted against Assam and India. The SNDi of new construction in Lumding rose steadily, compared to Assam which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Lumding's incremental SNDi rose from 6.91 to 9.56 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lumding ranked 32nd out of 67 cities in Assam and 1163rd 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?

• Gurdaspur, India
• San Francisco de Macorís, Dominican Republic
• Sarasota, United States
• Củ Chi, Vietnam
• Rustenburg, South Africa
• Koudougou, Burkina Faso

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