Gereida in context: Street-network sprawl trends

Gereida in context

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
GereidaSouth Darfur (Region)Sudan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Gereida plotted against South Darfur and Sudan. The SNDi of new construction in Gereida was at its lowest in 1976-1990, compared to South Darfur which peaked in 1991-2005 and Sudan which followed a zig-zag trend with an overall increase. Most recently, Gereida's incremental SNDi rose from 1.02 to 1.09 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gereida ranked 1st out of 6 cities in South Darfur and 6th out of 78 in Sudan as of 2020.

New Street Additions (2006–2020)

SNDi value
1.09
Rank in Sudan
4th of 78
Rank in South Darfur
1st of 6

Entire Network (Aggregate)

SNDi value
1.09
Rank in Sudan
6th of 78
Rank in South Darfur
1st of 6

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

What about similarly populated cities?

0246<19751976–19901991–20052006–2020SNDi of street additions
0246<19751976–19901991–20052006–2020SNDi of entire street network
GereidaAz ZulfiTrimohini

In new street additions, Gereida built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Az Zulfi built increasingly disconnected streets from 1975 through 1976-1990, then improved and Trimohini built increasingly disconnected streets over time. For the full network, Gereida became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Az Zulfi grew more disconnected from 1975 through 1991-2005, then improved and Trimohini became progressively more disconnected. Notably, Gereida had a more sprawly network than Az Zulfi in 1975 but the two have since reversed their relative ranking.