Faya-Largeau in context: Street-network sprawl trends

Faya-Largeau in context

369<19751976–19901991–20052006–2020SNDi of street additions
369<19751976–19901991–20052006–2020SNDi of entire street network
Faya-LargeauBorkou (Region)Chad (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Faya-Largeau plotted against Borkou and Chad. The SNDi of new construction in Faya-Largeau followed a zig-zag trend with an overall increase, compared to Borkou which followed a zig-zag trend with an overall increase and Chad which rose steadily. Most recently, Faya-Largeau's incremental SNDi fell from 10.11 to 8.17 between 1991-2005 and 2006-2020. In terms of the aggregate network, Faya-Largeau ranked 1st out of 1 cities in Borkou and 29th out of 31 in Chad as of 2020.

New Street Additions (2006–2020)

SNDi value
8.17
Rank in Chad
29th of 31
Rank in Borkou
1st of 1

Entire Network (Aggregate)

SNDi value
7.16
Rank in Chad
29th of 31
Rank in Borkou
1st of 1

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

What about similarly populated cities?

46810<19751976–19901991–20052006–2020SNDi of street additions
46810<19751976–19901991–20052006–2020SNDi of entire street network
Faya-LargeauHaringhataPangkalan Brandan

In new street additions, Faya-Largeau fluctuated in its street-construction patterns, while Haringhata built increasingly disconnected streets over time and Pangkalan Brandan built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Faya-Largeau and Pangkalan Brandan both became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Haringhata became progressively more disconnected. Faya-Largeau and Haringhata have been converging in their street-network character since 1975.