Sidi Khaled in context: Street-network sprawl trends

Sidi Khaled 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
Sidi KhaledBiskra (Region)Algeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sidi Khaled plotted against Biskra and Algeria. While Biskra and Algeria both followed a zig-zag trend with an overall decrease, Sidi Khaled's new street additions followed a zig-zag trend with an overall decrease. Most recently, Sidi Khaled's incremental SNDi rose from 1.2 to 1.39 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sidi Khaled ranked 1st out of 4 cities in Biskra and 13th out of 109 in Algeria as of 2020.

New Street Additions (2006–2020)

SNDi value
1.39
Rank in Algeria
11th of 109
Rank in Biskra
1st of 4

Entire Network (Aggregate)

SNDi value
1.42
Rank in Algeria
13th of 109
Rank in Biskra
1st of 4

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
Sidi KhaledYahongqiaoUquo

In new street additions, Sidi Khaled and Yahongqiao both fluctuated in its street-construction patterns, while Uquo built increasingly disconnected streets over time. For the full network, Sidi Khaled grew more disconnected from 1975 through 1976-1990, then improved, while Yahongqiao fluctuated in connectivity and Uquo became progressively more disconnected. Sidi Khaled and Yahongqiao have been growing further apart in their street-network character since 1975.