Zango V Centrality in context: Street-network sprawl trends

Zango V Centrality in context

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
Zango V CentralityLuanda (Region)Angola (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Zango V Centrality plotted against Luanda and Angola. The SNDi of new construction in Zango V Centrality followed a zig-zag trend with an overall increase, compared to Luanda which fell steadily and Angola which rose steadily. Most recently, Zango V Centrality's incremental SNDi rose from 3.97 to 4.32 between 1991-2005 and 2006-2020. In terms of the aggregate network, Zango V Centrality ranked 4th out of 4 cities in Luanda and 51st out of 56 in Angola as of 2020.

New Street Additions (2006–2020)

SNDi value
4.32
Rank in Angola
46th of 56
Rank in Luanda
4th of 4

Entire Network (Aggregate)

SNDi value
4.25
Rank in Angola
51st of 56
Rank in Luanda
4th of 4

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

What about similarly populated cities?

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
Zango V CentralityAl AredLukuni

In new street additions, Zango V Centrality fluctuated in its street-construction patterns, while Al Ared built increasingly connected streets over time and Lukuni fluctuated in its street-construction patterns. For the full network, Zango V Centrality became progressively more disconnected, while Al Ared became progressively more connected and Lukuni became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Zango V Centrality and Al Ared have been growing further apart in their street-network character since 1975.