Quibala in context: Street-network sprawl trends
Quibala in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Quibala plotted against Cuanza Sul and Angola. The SNDi of new construction in Quibala was at its lowest in 1976-1990, compared to Cuanza Sul which followed a zig-zag trend with an overall increase and Angola which rose steadily. Most recently, Quibala's incremental SNDi rose from 2.06 to 3.04 between 1991-2005 and 2006-2020. In terms of the aggregate network, Quibala ranked 3rd out of 8 cities in Cuanza Sul and 29th out of 56 in Angola as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 3.04
- Rank in Angola
- 35th of 56
- Rank in Cuanza Sul
- 3rd of 8
Entire Network (Aggregate)
- SNDi value
- 2.44
- Rank in Angola
- 29th of 56
- Rank in Cuanza Sul
- 3rd of 8
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Quibala built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Karangampel built increasingly disconnected streets from 1975 through 1991-2005, then improved and Houndé built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Quibala became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Karangampel became progressively more disconnected and Houndé became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Quibala had a more connected network than Houndé in 1975 but the two have since reversed their relative ranking.