Kolasib 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 Kolasib plotted against Mizoram and India. The SNDi of new construction in Kolasib rose steadily, compared to Mizoram which followed a zig-zag trend with an overall increase and India which followed a zig-zag trend with an overall increase. Most recently, Kolasib's incremental SNDi rose from 3.39 to 4.75 between 1991-2005 and 2006-2020. In terms of the aggregate network, Kolasib ranked 1st out of 3 cities in Mizoram and 534th 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?

• Liberia, Costa Rica
• Al Beidha, Yemen
• Goalanda, Bangladesh
• Nijoni, Tajikistan
• Elmina, Ghana
• Bahadurganj, India

In new street additions, Kolasib and Liberia both built increasingly disconnected streets over time, while Nijoni fluctuated in its street-construction patterns. For the full network, Kolasib became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Liberia became progressively more disconnected and Nijoni became progressively more connected. Notably, Kolasib had a more connected network than Nijoni in 1975 but the two have since reversed their relative ranking.