Tômbua in context: Street-network sprawl trends

Tombua in context

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
TombuaNamibe (Region)Angola (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tômbua plotted against Namibe and Angola. The SNDi of new construction in Tômbua followed a zig-zag trend, compared to Namibe which rose steadily and Angola which rose steadily. In terms of the aggregate network, Tômbua ranked 2nd out of 2 cities in Namibe and 8th out of 56 in Angola as of 2020.

New Street Additions (2006–2020)

SNDi value
N/A

Entire Network (Aggregate)

SNDi value
1.77
Rank in Angola
8th of 56
Rank in Namibe
2nd of 2

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
TombuaPirassunungaEkangala

In new street additions, Tômbua fluctuated in its street-construction patterns, while Pirassununga built increasingly disconnected streets over time and Ekangala built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Tômbua became progressively more disconnected, while Pirassununga became progressively more disconnected and Ekangala became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Notably, Tômbua had a more sprawly network than Pirassununga in 1975 but the two have since reversed their relative ranking.