Gedeb in context: Street-network sprawl trends

Gedeb in context

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
GedebSouthern Nations, Nationalities (Region)Ethiopia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Gedeb plotted against Southern Nations, Nationalities and Ethiopia. The SNDi of new construction in Gedeb rose steadily, compared to Southern Nations, Nationalities which followed a zig-zag trend with an overall increase and Ethiopia which followed a zig-zag trend with an overall increase. Most recently, Gedeb's incremental SNDi rose from 1.57 to 2.77 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gedeb ranked 7th out of 39 cities in Southern Nations, Nationalities and 30th out of 181 in Ethiopia as of 2020.

New Street Additions (2006–2020)

SNDi value
2.77
Rank in Ethiopia
48th of 181
Rank in Southern Nations, Nationalities
14th of 39

Entire Network (Aggregate)

SNDi value
1.82
Rank in Ethiopia
30th of 181
Rank in Southern Nations, Nationalities
7th of 39

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

What about similarly populated cities?

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
GedebSihanoukvilleLianxing

In new street additions, Gedeb built increasingly disconnected streets over time, while Sihanoukville built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Lianxing built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Gedeb became progressively more disconnected, while Sihanoukville became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards and Lianxing grew more disconnected from 1975 through 1991-2005, then improved.