Comilla in context: Street-network sprawl trends

Comilla in context

481216<19751976–19901991–20052006–2020SNDi of street additions
481216<19751976–19901991–20052006–2020SNDi of entire street network
ComillaChittagong (Region)Bangladesh (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Comilla plotted against Chittagong and Bangladesh. The SNDi of new construction in Comilla was at its lowest in 1991-2005, compared to Chittagong which rose steadily and Bangladesh which followed a zig-zag trend with an overall increase. Most recently, Comilla's incremental SNDi rose from 8.59 to 12.77 between 1991-2005 and 2006-2020. In terms of the aggregate network, Comilla ranked 42nd out of 44 cities in Chittagong and 231st out of 234 in Bangladesh as of 2020.

New Street Additions (2006–2020)

SNDi value
12.77
Rank in Bangladesh
186th of 234
Rank in Chittagong
33rd of 44

Entire Network (Aggregate)

SNDi value
16.76
Rank in Bangladesh
231st of 234
Rank in Chittagong
42nd of 44

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

5101520<19751976–19901991–20052006–2020SNDi of street additions
5101520<19751976–19901991–20052006–2020SNDi of entire street network
ComillaBunzaTalara

In new street additions, Comilla built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Bunza fluctuated in its street-construction patterns and Talara fluctuated in its street-construction patterns. For the full network, Comilla and Bunza both became progressively more connected, while Talara grew more disconnected from 1975 through 1976-1990, then improved.