Ain Oussara in context: Street-network sprawl trends

Ain Oussara in context

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
Ain OussaraDjelfa (Region)Algeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ain Oussara plotted against Djelfa and Algeria. While Djelfa and Algeria both followed a zig-zag trend with an overall decrease, Ain Oussara's new street additions followed a zig-zag trend with an overall increase. Most recently, Ain Oussara's incremental SNDi rose from 1.3 to 1.4 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ain Oussara ranked 1st out of 4 cities in Djelfa and 4th out of 109 in Algeria as of 2020.

New Street Additions (2006–2020)

SNDi value
1.4
Rank in Algeria
12th of 109
Rank in Djelfa
1st of 4

Entire Network (Aggregate)

SNDi value
1.25
Rank in Algeria
4th of 109
Rank in Djelfa
1st of 4

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
Ain OussaraTarimGuercif

In new street additions, Ain Oussara and Guercif both fluctuated in its street-construction patterns, while Tarim built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Ain Oussara and Tarim both became progressively more disconnected, while Guercif fluctuated in connectivity. Ain Oussara and Tarim have been growing further apart in their street-network character since 1975.