Sumbe in context: Street-network sprawl trends
Sumbe in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sumbe plotted against Cuanza Sul and Angola. While Cuanza Sul and Angola both rose steadily, Sumbe's new street additions rose steadily. Most recently, Sumbe's incremental SNDi rose from 3.82 to 4.79 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sumbe ranked 6th out of 8 cities in Cuanza Sul and 45th out of 56 in Angola as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 4.79
- Rank in Angola
- 48th of 56
- Rank in Cuanza Sul
- 5th of 8
Entire Network (Aggregate)
- SNDi value
- 3.61
- Rank in Angola
- 45th of 56
- Rank in Cuanza Sul
- 6th 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, Sumbe and Huangchuan both built increasingly disconnected streets over time, while Tasouj built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Sumbe and Huangchuan both became progressively more disconnected, while Tasouj fluctuated in connectivity. Sumbe and Huangchuan have been converging in their street-network character since 1975.