Dourbali in context: Street-network sprawl trends

Dourbali in context

0.91.82.73.6<19751976–19901991–20052006–2020SNDi of street additions
0.91.82.73.6<19751976–19901991–20052006–2020SNDi of entire street network
DourbaliChari-Baguirmi (Region)Chad (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dourbali plotted against Chari-Baguirmi and Chad. While Chari-Baguirmi and Chad both rose steadily, Dourbali's new street additions rose steadily. Most recently, Dourbali's incremental SNDi rose from 1.02 to 1.52 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dourbali ranked 1st out of 1 cities in Chari-Baguirmi and 2nd out of 31 in Chad as of 2020.

New Street Additions (2006–2020)

SNDi value
1.52
Rank in Chad
8th of 31
Rank in Chari-Baguirmi
1st of 1

Entire Network (Aggregate)

SNDi value
0.74
Rank in Chad
2nd of 31
Rank in Chari-Baguirmi
1st of 1

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

What about similarly populated cities?

0369<19751976–19901991–20052006–2020SNDi of street additions
0369<19751976–19901991–20052006–2020SNDi of entire street network
DourbaliMatlabZadar

In new street additions, Dourbali built increasingly disconnected streets over time, while Matlab fluctuated in its street-construction patterns and Zadar built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Dourbali and Zadar both became progressively more disconnected, while Matlab became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards.