Aïn Touta in context: Street-network sprawl trends

Ain Touta 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 ToutaBatna (Region)Algeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Aïn Touta plotted against Batna and Algeria. The SNDi of new construction in Aïn Touta rose steadily, compared to Batna which followed a zig-zag trend with an overall increase and Algeria which followed a zig-zag trend with an overall decrease. Most recently, Aïn Touta's incremental SNDi rose from 1.71 to 2.67 between 1991-2005 and 2006-2020. In terms of the aggregate network, Aïn Touta ranked 1st out of 3 cities in Batna and 29th out of 109 in Algeria as of 2020.

New Street Additions (2006–2020)

SNDi value
2.67
Rank in Algeria
69th of 109
Rank in Batna
2nd of 3

Entire Network (Aggregate)

SNDi value
1.64
Rank in Algeria
29th of 109
Rank in Batna
1st of 3

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
Ain ToutaBamaurAliade

In new street additions, Aïn Touta and Bamaur both built increasingly disconnected streets over time, while Aliade fluctuated in its street-construction patterns. For the full network, Aïn Touta and Bamaur both became progressively more disconnected, while Aliade fluctuated in connectivity. Notably, Aïn Touta had a more sprawly network than Aliade in 1975 but the two have since reversed their relative ranking.